minor modifications to help text string (#633)

Signed-off-by: Ross Turk <[email protected]>

site.sh

@@ -33,34 +33,34 @@ function usage {
 cat << EOF
 usage: ${0} <command> [<args>]
 
-These are  ${0} commands used in various situations:
-
-    build-site            Prepare dist directory with landing pages and documentation.
-    preview-landing-pages Starts the web server with preview of the website.
-    build-landing-pages   Builds a landing pages.
-    prepare-theme         Prepares and copies files needed for the proper functioning of the sphinx theme.
-    shell                 Start shell.
-    build-image           Build a Docker image with a environment.
+These are the ${0} commands that can be used in various situations:
+
+    build-site            Prepare dist/ directory with landing pages and docs.
+    preview-landing-pages Start the web server with preview of the landing pages.
+    build-landing-pages   Build the landing pages.
+    prepare-theme         Copy required CSS/JS files from landing pages into the docs theme.
+    shell                 Start a shell.
+    build-image           Build a Docker image with an environment.
     install-node-deps     Download all the Node dependencies.
-    check-site-links      Checks if the links are correct in the website.
+    check-site-links      Check to make sure that links are correct in the website.
     lint-css              Lint CSS files.
     lint-js               Lint Javascript files.
     cleanup               Delete the virtual environment in Docker.
     stop                  Stop the environment.
     help                  Display usage.
 
-Unrecognized commands are run as programs in the container.
+Unrecognized commands are run as programs inside the container.
 
 For example, if you want to display a list of files, you
 can execute the following command:
 
     $0 ls
 
-The following command can also be performed from the Docker environment:
+The following commands can also be performed from the Docker environment:
 install-node-deps, preview, build-site, lint-css, lint-js.
 
-The lint-css and lint-js accept paths in arguments. If no path is given, the script
-will be executed for all supported files.
+The lint-css and lint-js commands accept paths in arguments. If no path is given,
+the script will be executed for all supported files.
 
 EOF
 }