docker cd ../paddle in compile file

doc/fluid/install/compile/compile_CentOS_en.md

@@ -143,6 +143,12 @@ Please follow the steps below to install:
 
     > Use multicore compilation
 
+    Note: if compile fail, normally because you did config git properly,  read the following blog: [stackoverflow](hhttps://stackoverflow.com/questions/35821245/github-server-certificate-verification-failed).
+
+    Or you can just disable SSL verification, (if the project does not require a high level of security other than login/password) by typing:
+
+    `git config --global http.sslverify false`
+
 10. After compiling successfully, go to the `/paddle/build/python/dist` directory and find the generated `.whl` package: `cd /paddle/build/python/dist`
 
 11. Install the compiled `.whl` package on the current machine or target machine:

doc/fluid/install/compile/compile_MacOS.md

@@ -45,7 +45,7 @@
 
 5. 进入Docker后进入paddle目录下：
 
-	`cd paddle`
+	`cd ../paddle`
 
 6. 切换到较稳定版本下进行编译：
 

doc/fluid/install/compile/compile_MacOS_en.md

@@ -49,7 +49,7 @@ Please follow the steps below to install:
 
 5. After entering Docker, go to the paddle directory: 
 
-	`cd paddle`
+	`cd ../paddle`
 
 6. Switch to a more stable version to compile: