Fix quotes in helm check

Author: GDYendell

.github/workflows/_helm.yml

@@ -29,9 +29,9 @@ jobs:
           VERSION: "${{ github.ref_name }}"
         run: |
           if [[ "${VERSION}" =~ ^[0-9]+\.[0-9]+\.[0-9]+((-alpha|-beta|-rc)\.[0-9]+)?$ ]]; then
-              echo "Valid version format: `${VERSION}`"
+              echo "Valid version format: '${VERSION}'"
           else
-              echo "Invalid version: `${VERSION}`. Expected: `X.Y.Z` or `X.Y.Z-beta.1` or `X.Y.Z-alpha.1`"
+              echo "Invalid version: '${VERSION}'. Expected: 'X.Y.Z' or 'X.Y.Z-beta.1' or 'X.Y.Z-alpha.1'"
               exit 1
           fi