remove GitHub references

package.yaml

@@ -1,6 +1,5 @@
 name:                gemserv
 version:             0.0.0
-github:              "jlamothe/gemserv"
 license:             AGPL-3.0-or-later
 author:              "Jonathan Lamothe"
 maintainer:          "jonathan@jlamothe.net"
@@ -11,13 +10,14 @@ extra-source-files:
 - ChangeLog.md
 
 # Metadata used when publishing your package
-synopsis:            Basic Gemini server
+synopsis:            simple Gemini server
 category:            Gemini
+homepage:            https://git.fingerprintsoftware.ca/jlamothe/gemserv
 
 # To avoid duplicated efforts in documentation and dealing with the
 # complications of embedding Haddock markup inside cabal files, it is
 # common to point users to the README.md file.
-description:         Please see the README on GitHub at <https://github.com/jlamothe/gemserv#readme>
+description:         simple Gemini server - see README.md for details
 
 ghc-options:
 - -Wall