Make the new CI checks mandatory by naming them elsewhere so that GHA sees it

(cherry picked from commit bbaa2b1)

# Conflicts:
#	.github/workflows/whitespace.yml

Author: Mikolaj

.github/workflows/changelogs.yml

@@ -1,4 +1,4 @@
-name: Changelogs
+name: Assorted
 
 on:
   push:
@@ -21,6 +21,7 @@ defaults:
 
 jobs:
   build:
+    name: Changelogs
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/users-guide.yml

@@ -1,6 +1,6 @@
 # Adapted from agda/agda/.github/workflows/user-manual.yml by Andreas, 2021-09-11
 
-name: Users guide
+name: Assorted
 
 # See: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#concurrency.
 concurrency:
@@ -42,6 +42,7 @@ defaults:
 
 jobs:
   build:
+    name: Users guide
     runs-on: ubuntu-latest
     strategy:
       matrix: