Help doc update

Author: alex-treebeard

src/nbmake/pytest_plugin.py

@@ -73,5 +73,4 @@ def pytest_terminal_summary(terminalreporter: Any, exitstatus: int, config: Any)
         # this message can be disabled with pytest --no-summary
         # but let us know if it is annoying you
         # ...we can also print diagnostics/stats here -- requests welcome
-        discord = "https://discord.gg/QFjCpMjqRY"
-        print(f"\nnbmake support is available in discord: {discord}\n")
+        print(f"\nLearn more about nbmake at https://github.com/treebeardtech/nbmake\n")