Change fetch location to absolute url (#119)

Author: M-Chan

catalog-info.yaml

@@ -95,7 +95,7 @@ spec:
       name: Fetch Base
       action: fetch:copier
       input:
-        url: .
+        url: https://github.com/DiamondLightSource/python-copier-template
         values:
           destination: ${{ parameters.repoUrl | parseRepoUrl }}
           # These are answers for the copier template