Fix generation step

Author: pikinier20

.github/workflows/language-reference.yaml

@@ -43,8 +43,10 @@ jobs:
 
       - name: Generate reference documentation and test links
         run: |
-          ./dotty/project/scripts/sbt scaladoc/generateReferenceDocumentation --no-regenerate-expected-links
-          ./dotty/project/scripts/docsLinksStability ./dotty/scaladoc/output/reference ./dotty/project/scripts/expected-links/reference-expected-links.txt
+          cd dotty
+          ./project/scripts/sbt scaladoc/generateReferenceDocumentation --no-regenerate-expected-links
+          ./project/scripts/docsLinksStability ./scaladoc/output/reference ./project/scripts/expected-links/reference-expected-links.txt
+          cd ..
 
       - name: Push changes to scala3-reference-docs
         if: github.event_name == 'push'