apollo.sh: fix typo

apollo.sh

@@ -103,14 +103,14 @@ function _usage() {
   .${BOLD}/apollo.sh${NO_COLOR} [OPTION]"
   echo -e "\n${RED}Options${NO_COLOR}:
   ${BLUE}config [options]${NO_COLOR}: config bazel build environment either non-interactively (default) or interactively.
-  ${BLUE}build [module]${NO_COLOR}: run build for cyber (<module> = cyber) or modules/<module>.  If <module> not specified, build all.
+  ${BLUE}build [module]${NO_COLOR}: run build for cyber (<module> = cyber) or modules/<module>.  If <module> unspecified, build all.
   ${BLUE}build_dbg [module]${NO_COLOR}: run debug build (default).
   ${BLUE}build_opt [module]${NO_COLOR}: run optimized build.
   ${BLUE}build_cpu [module]${NO_COLOR}: build in CPU mode. Equivalent to 'bazel build --config=cpu'
   ${BLUE}build_gpu [module]${NO_COLOR}: run build in GPU mode. Equivalent to 'bazel build --config=gpu'
   ${BLUE}build_opt_gpu [module]${NO_COLOR}: optimized build in GPU mode. Equivalent to 'bazel build --config=opt --config=gpu'
-  ${BLUE}test [module]${NO_COLOR}: run unit tests for cyber (<module> = cyber) or modules/<module>. If <module> not specified, unit test all.
-  ${BLUE}coverage [module]${NO_COLOR}: run bazel coverage test for cyber (<module> = cyber) or modules/<module>. If <module> not specified, coverage test all.
+  ${BLUE}test [module]${NO_COLOR}: run unit tests for cyber (<module> = cyber) or modules/<module>. If <module> unspecified, unit test all.
+  ${BLUE}coverage [module]${NO_COLOR}: run bazel coverage test for cyber (<module> = cyber) or modules/<module>. If <module> unspecified, coverage test all.
   ${BLUE}lint${NO_COLOR}: run code style check
   ${BLUE}buildify${NO_COLOR}: run 'buildifier' to fix style of bazel files
   ${BLUE}check${NO_COLOR}: run build, test and lint on all modules. Make sure check pass before checking in new code