sync-git-mailing-list-mirror: start making the workflow more generic

I want to use the same workflow in a fork to synchronize _Cygwin's_
mailing list mirror; Let's rename the workflow and its job so that it
stops claiming to synchronize _Git's_ mailing list mirror.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/sync-git-mailing-list-mirror.yml renamed to .github/workflows/sync-mailing-list-mirror.yml

@@ -1,4 +1,4 @@
-name: sync-git-mailing-list-mirror
+name: sync-mailing-list-mirror
 
 on:
   workflow_dispatch:
@@ -11,11 +11,11 @@ env:
   TARGET_GITHUB_REPOSITORY: gitgitgadget/git-mailing-list-mirror
 
 concurrency:
-  group: sync-git-mailing-list-mirror
+  group: sync-mailing-list-mirror
   cancel-in-progress: true
 
 jobs:
-  sync-git-mailing-list-mirror:
+  sync-mailing-list-mirror:
     runs-on: ubuntu-latest
     permissions:
       contents: write

README.md

@@ -4,6 +4,6 @@ This repository contains GitHub workflows, i.e. automated tasks, that keep [GitG
 
 ## Keeping the mirror of the Git mailing list up to date
 
-The `sync-git-mailing-list.yml` workflow keeps the mirror at https://github.com/gitgitgadget/git-mailing-list of the Git mailing list mirror at https://lore.kernel.org/git up to date. Since that mirror chunks the archive by epochs, this mirror fetches each epoch into its own branch: the oldest epoch into `lore-0`, the next one into `lore-1`, etc.
+The `sync-mailing-list-mirror.yml` workflow keeps the mirror at https://github.com/gitgitgadget/git-mailing-list of the Git mailing list mirror at https://lore.kernel.org/git up to date. Since that mirror chunks the archive by epochs, this mirror fetches each epoch into its own branch: the oldest epoch into `lore-0`, the next one into `lore-1`, etc.
 
 Previously, this workflow lived in the `git-mailing-list` repository in the `sync` branch, which was the default branch because scheduled workflows _must_ live in the default branch.