✏️ Fix a few small typos in the documentation (#1077)

docs/contributing.md

@@ -74,7 +74,7 @@ This command generates a directory `./htmlcov/`, if you open the file `./htmlcov
 
 To try and test the completion for different shells and check that they are working you can use a Docker container.
 
-There's a `Dockerfile` and a a Docker Compose file `compose.yaml` at `./scripts/docker/`.
+There's a `Dockerfile` and a Docker Compose file `compose.yaml` at `./scripts/docker/`.
 
 It has installed `bash`, `zsh`, `fish`, and `pwsh` (PowerShell for Linux).
 
@@ -237,9 +237,9 @@ That way, you can edit the documentation/source files and see the changes live.
 
 /// tip
 
-Alternatively, you can perform the same steps that scripts does manually.
+Alternatively, you can perform the same steps that script does manually.
 
-Go into the docs director at `docs/`:
+Go into the docs directory at `docs/`:
 
 ```console
 $ cd docs/

docs/tutorial/options-autocompletion.md

@@ -14,7 +14,7 @@ After installing completion for your own Python package (or using the `typer` co
 
 To check it quickly without creating a new Python package, use the `typer` command.
 
-Then let's create small example program:
+Then let's create a small example program:
 
 {* docs_src/options_autocompletion/tutorial001_an.py *}