Update main.yml

Author: gares

.github/workflows/main.yml

@@ -29,7 +29,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     strategy:
-      #fail-fast: false
+      fail-fast: false
       matrix:
         coq_version: [ '8.19.2' , '8.20+rc1' , 'dev' ]
         ocaml_version: