Add codespell to check for typos

.codespellignore

@@ -0,0 +1,2 @@
+FORRT
+COS

.github/workflows/check_typos.yml

@@ -0,0 +1,19 @@
+on:
+    pull_request:
+        branches:
+            - master
+
+name: Check typos
+jobs:
+    codespell:
+        name: Discover typos with codespell
+        runs-on: ubuntu-latest
+        strategy:
+            fail-fast: false
+        steps:
+          - uses: actions/checkout@v3
+          - uses: codespell-project/actions-codespell@master
+            with:
+              skip: "*.yml,*.py,*.toml,*.css, *.geojson, *.pdf"
+              ignore_words_file: .codespellignore
+              only_warn: 1

CONTRIBUTING.md

@@ -56,7 +56,7 @@ A way to run the project locally without installing Hugo on the host machine is
 2. Open `.devcontainer/devcontainer.json` in VSCode. If you are on a Windows host, go to `.devcontainer\dev\devcontainer.json` and uncomment the line `"remoteUser": "root"` before continuing.
 3. In the context menu of VSCode (Crl + Shift + P), select `Dev Containers: Open Folder in Container`. Alternatively, a pop-up will appear in the bottom right corner of the window asking if you want to open the folder in a container. Click on `Reopen in Container`.
 4. Wait for the container to build. The context of VS Code will change. In the bottom left corner, you will see a green icon with the name of the container (Hugo Dev).
-5. Run `hugo server -D`. The container will foward port 1313 to the host machine, so you can access the website at `http://localhost:1313`.
+5. Run `hugo server -D`. The container will forward port 1313 to the host machine, so you can access the website at `http://localhost:1313`.
 
 ### Development - R-Studio
 
@@ -91,4 +91,4 @@ To edit it locally, you will then need to:
 8. Then you can push this branch to GitHub.
 9. Create a pull request to the original FORRT repo.
 
-Please note that RStudio is not designed for website development, so you may find it easier to use the Dev Containers method described above.
+Please note that RStudio is not designed for website development, so you may find it easier to use the Dev Containers method described above.