Check version: More explicit error message

Author: howetuft

.github/workflows/wheel-releaser.yml

@@ -40,7 +40,14 @@ jobs:
           if res:
             print("Version number OK ('{version}')")
           else:
-            print(f"::error::Invalid version number '{version}' - (see https://semver.org)")
+            message = [
+              f"::error::INVALID RELEASE VERSION NUMBER '{version}'",
+              "Version must comply to Semantic Versioning standard:",
+              "\n\tmajor.minor.patch[-pre]\n",
+              "See https://semver.org for more information",
+              "or leave the field blank for default value\n"
+            ]
+            print("\n".join(message))
             sys.exit(1)
 
   call-build-wheels: