workflows: remove the custom windows only jobs

Restore the job matrix to run on linux, macos and windows.

Remove lines with extra whitespace.

Improve the documentation of the Eowyn workflow.

Remove the single quoting of the workflow names.

.github/workflows/ci.yml

@@ -1,5 +1,4 @@
-name: 'CI'
-# Makes some checks
+name: CI
 
 on:
   pull_request:
@@ -28,11 +27,11 @@ jobs:
       - name: Check compatibility with old Zig compilers
         run: ci/compat.sh
 
-  test-linux_mac:
+  test:
     name: Unit Tests
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
     steps:
@@ -46,19 +45,3 @@ jobs:
 
       - name: Run unit tests
         run: zig build test
-        
-  test-windows:
-    name: Unit Test Windows
-    runs-on: windows-latest
-    timeout-minutes: 30
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-
-      - name: Setup Zig
-        uses: goto-bus-stop/setup-zig@v2
-        with:
-          version: master
-
-      - name: Run unit tests
-        run: zig build test

.github/workflows/eowyn.yml

@@ -1,5 +1,5 @@
-name: 'Eowyn'
-# Tests all exercises
+# Test that exercises work with the latest Zig compiler.
+name: Eowyn
 
 on:
   pull_request:
@@ -13,10 +13,10 @@ defaults:
     shell: bash
 
 jobs:
-  build-linux_mac:
+  build:
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     timeout-minutes: 30
     steps:
@@ -30,18 +30,3 @@ jobs:
 
       - name: Run Eowyn
         run: patches/eowyn.sh
-        
-  build-windows:
-    runs-on: windows-latest
-    timeout-minutes: 30
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        
-      - name: Setup Zig
-        uses: goto-bus-stop/setup-zig@v2
-        with:
-          version: master
-          
-      - name: Run Eowyn
-        run: patches/eowyn.sh