docs: 📝 readme small fix for pdf file name

Signed-off-by: Onuralp SEZER <[email protected]>

README.md

@@ -10,7 +10,7 @@ The developers of this content are interested in knowing how it is being used. P
 
 ## How to use this repository
 
-The current build of the  PDF is avaliable in GitHub Actions. Visit <https://github.com/openSUSE/lessons/actions/workflows/pdf.yml>, click the latest entry with a green  checkmark next to it and click on `lesson-plan.pdf` down at the bottom. This will give you a zip file containing the PDF. This is not an ideal solution, if you have any suggestions on how to improve this Action feel free to open a PR.
+The current build of the  PDF is avaliable in GitHub Actions. Visit <https://github.com/openSUSE/lessons/actions/workflows/pdf.yml>, click the latest entry with a green  checkmark next to it and click on `lesson-develop-plan.pdf` down at the bottom. This will give you a zip file containing the PDF. This is not an ideal solution, if you have any suggestions on how to improve this Action feel free to open a PR.
 
 ## Setting up your build environment