Fix the comment

Author: sholderbach

.github/workflows/command-block.yml

@@ -20,7 +20,7 @@ jobs:
               owner: context.repo.owner,
               repo: context.repo.repo,
               body: 'Awesome that you are trying to improve the documentation of a nushell command!\n\n' +
-                'You should not modify the files in `commands/docs` or `commands/categorees`!\n' +
+                '**You should not modify the files in `commands/docs` or `commands/categories`!**\n' +
                 'We autogenerate these command pages from the `help` information defined by the command implementation, after each release. Thus:\n'+
                 '- If you already updated the command help, you are already done and can close this PR!\n'+
                 '- Else, please look for the command in the [source tree](https://github.com/nushell/nushell/tree/main/crates) and make your changes directly there in the `impl Command` and `Signature`.\n'+