fix some typos

Signed-off-by: NXinbo Weng <xihuanbo_0521@zju.edu.cn>

fix my errors
Signed-off-by: NXinbo Weng <xihuanbo_0521@zju.edu.cn>

hack/jenkins/common.sh

@@ -17,7 +17,7 @@
 
 # This script downloads the test files from the build bucket and makes some executable.
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # OS_ARCH: The operating system and the architecture separated by a hyphen '-' (e.g. darwin-amd64, linux-amd64, windows-amd64)
 
 
@@ -27,7 +27,6 @@ gsutil cp gs://minikube-builds/${MINIKUBE_LOCATION}/minikube-${OS_ARCH} out/
 gsutil cp gs://minikube-builds/${MINIKUBE_LOCATION}/e2e-${OS_ARCH} out/
 gsutil cp gs://minikube-builds/${MINIKUBE_LOCATION}/testdata/busybox.yaml testdata/
 
-# Set the executible bit on the e2e binary and out binary
+# Set the executable bit on the e2e binary and out binary
 chmod +x out/e2e-${OS_ARCH}
 chmod +x out/minikube-${OS_ARCH}
-

hack/jenkins/linux_integration_tests_kvm.sh

@@ -17,7 +17,7 @@
 
 # This script runs the integration tests on a Linux machine for the KVM Driver
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # MINIKUBE_LOCATION: GIT_COMMIT from upstream build.
 # COMMIT: Actual commit ID from upstream build
 # EXTRA_BUILD_ARGS (optional): Extra args to be passed into the minikube integrations tests

hack/jenkins/linux_integration_tests_virtualbox.sh

@@ -17,7 +17,7 @@
 
 # This script runs the integration tests on a Linux machine for the Virtualbox Driver
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # MINIKUBE_LOCATION: GIT_COMMIT from upstream build.
 # COMMIT: Actual commit ID from upstream build
 # EXTRA_BUILD_ARGS (optional): Extra args to be passed into the minikube integrations tests

hack/jenkins/localkube.sh

@@ -17,7 +17,7 @@
 
 # This script creates the localkube binary for a specified kubernetes Github tag (ex: v1.4.0)
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # K8S_VERSION: The version of kubernetes to build localkube with
 # COMMIT: The commit to build minikube with
 

hack/jenkins/minikube_cross_build_and_upload.sh

@@ -17,7 +17,7 @@
 # This script builds the minikube binary for all 3 platforms and uploads them.
 # This is to done as part of the CI tests for Github PRs
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # ghprbPullId: The pull request ID, injected from the ghpbr plugin.
 # ghprbActualCommit: The commit hash, injected from the ghpbr plugin.
 

hack/jenkins/minikube_set_pending.sh

@@ -19,7 +19,7 @@
 # This is intended to run before the tests start, so the icons show up on the Github PR and block submit until
 # the tests finish.
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # ghprbPullId: The pull request ID, injected from the ghpbr plugin.
 # ghprbActualCommit: The commit hash, injected from the ghpbr plugin.
 # access_token: The Github API access token. Injected by the Jenkins credential provider. 

hack/jenkins/osx_integration_tests_virtualbox.sh

@@ -17,7 +17,7 @@
 
 # This script runs the integration tests on an OSX machine for the Virtualbox Driver
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # MINIKUBE_LOCATION: GIT_COMMIT from upstream build.
 # COMMIT: Actual commit ID from upstream build
 # EXTRA_BUILD_ARGS (optional): Extra args to be passed into the minikube integrations tests

hack/jenkins/osx_integration_tests_xhyve.sh

@@ -17,7 +17,7 @@
 
 # This script runs the integration tests on an OSX machine for the XHyve Driver
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # MINIKUBE_LOCATION: GIT_COMMIT from upstream build.
 # COMMIT: Actual commit ID from upstream build
 # EXTRA_BUILD_ARGS (optional): Extra args to be passed into the minikube integrations tests

hack/jenkins/promote_localkube_binary.sh

@@ -17,7 +17,7 @@
 
 # This script runs the integration tests on an OSX machine for the xhyve Driver
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # K8S_VERSION: GIT_COMMIT from upstream build.
 # BUCKET: The GCP bucket the build files should be uploaded to.
 

hack/jenkins/release_build_and_upload.sh

@@ -17,7 +17,7 @@
 # This script builds all the minikube binary for all 3 platforms as well as Windows-installer and .deb
 # This is intended to be run on a new release tag in order to build/upload the required files for a release
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # VERSION_MAJOR: The major version of the tag to be released.
 # VERSION_MINOR: The minor version of the tag to be released.
 # VERSION_BUILD: The build version of the tag to be released.

hack/jenkins/release_github_page.sh

@@ -17,7 +17,7 @@
 # This script generates the Github Release page and uploads all the binaries/etc to that page
 # This is intended to be run on a new release tag in order to generate the github release page for that release
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # VERSION_MAJOR: The major version of the tag to be released.
 # VERSION_MINOR: The minor version of the tag to be released.
 # VERSION_BUILD: The build version of the tag to be released.

hack/jenkins/release_update_releases_json.sh

@@ -17,7 +17,7 @@
 # This script generates the Github Release page and uploads all the binaries/etc to that page
 # This is intended to be run on a new release tag in order to generate the github release page for that release
 
-# The script expects the following env variabls:
+# The script expects the following env variables:
 # VERSION_MAJOR: The major version of the tag to be released.
 # VERSION_MINOR: The minor version of the tag to be released.
 # VERSION_BUILD: The build version of the tag to be released.