build(docs): correct [gh-actions] to [gh]

Author: nedbat

.github/workflows/coverage.yml

@@ -39,7 +39,7 @@ jobs:
           - macos-latest
           - windows-latest
         python-version:
-          # When changing this list, be sure to check the [gh-actions] list in
+          # When changing this list, be sure to check the [gh] list in
           # tox.ini so that tox will run properly. PYVERSIONS
           # Available versions:
           # https://github.com/actions/python-versions/blob/main/versions-manifest.json

.github/workflows/python-nightly.yml

@@ -42,7 +42,7 @@ jobs:
     strategy:
       matrix:
         python-version:
-          # When changing this list, be sure to check the [gh-actions] list in
+          # When changing this list, be sure to check the [gh] list in
           # tox.ini so that tox will run properly. PYVERSIONS
           # Available versions:
           # https://launchpad.net/~deadsnakes/+archive/ubuntu/nightly/+packages

.github/workflows/testsuite.yml

@@ -39,7 +39,7 @@ jobs:
           - macos
           - windows
         python-version:
-          # When changing this list, be sure to check the [gh-actions] list in
+          # When changing this list, be sure to check the [gh] list in
           # tox.ini so that tox will run properly. PYVERSIONS
           # Available versions:
           # https://github.com/actions/python-versions/blob/main/versions-manifest.json

tox.ini

@@ -2,7 +2,7 @@
 # For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt
 
 [tox]
-# When changing this list, be sure to check the [gh-actions] list below.
+# When changing this list, be sure to check the [gh] list below.
 # PYVERSIONS
 envlist = py{37,38,39,310,311,312}, pypy3, doc, lint
 skip_missing_interpreters = {env:COVERAGE_SKIP_MISSING_INTERPRETERS:True}