minor tweaks to wording

src/docs/bash-in-gitpod.md

@@ -1,6 +1,6 @@
 # Bash in Gitpod
 
-Bash is the default shell for Gitpod. However, if you're developing a Bash script yourself, you may want to configure additional language support for Bash.
+Bash is the default shell for Gitpod. However, if you're developing a Bash script yourself, you may want to configure additional language support.
 
 ## Bash Examples
 
@@ -16,9 +16,9 @@ Bash is the default shell for Gitpod. However, if you're developing a Bash scrip
 
 ### ShellCheck
 
-ShellCheck provides linting for common mistakes in your shell script
+ShellCheck provides linting for common mistakes in your shell script.
 
-To use ShellCheck in Gitpod, first, we must install the `shellcheck` tool. Here is a Dockerfile to get you started.
+To use ShellCheck in Gitpod, first, we must install the `shellcheck` tool. Here is a simple Dockerfile to get you started:
 
 ```Dockerfile
 FROM gitpod/workspace-full
@@ -28,7 +28,7 @@ USER gitpod
 RUN brew install shellcheck
 ```
 
-You should also install the shellcheck VS Code extension in Gitpod, e.g. by adding a [`.gitpod.yml`](https://www.gitpod.io/docs/41_config_gitpod_file/) configuration file to your repository that looks like this (notice the `vscode` extensions section):
+You should also install the shellcheck VS Code extension in Gitpod, by adding a [`.gitpod.yml`](https://www.gitpod.io/docs/41_config_gitpod_file/) configuration file to your repository that looks like this (notice the `vscode` extensions section):
 
 ```yaml
 image: