Ensure language is specified when documenting code snippets throughout the documentation
Description
Currently, some of the pages specify languages for code snippet but others don't. We should always specify the language to ensure that doxygen correctly renders the code snippet. This ticket aims to address that throughout the AutowareAuto documentation folders.
Expected behavior
Should change any instances of:
```
$ git commit -m "What language is this?"
```
to specify the correct language:
```{bash}
$ git commit -m "Rendered in bash"
```
Definition of Done
-
All instances of the above are rectified
Edited by Jilada Eccleston