github actions: Align cmake step names with the autotools build.

Make it a little more clear how steps correspond, and add 'build'
to both workflow names so the intention of the runs is explicit
on the actions page.
diff --git a/.github/workflows/autotools.yml b/.github/workflows/autotools.yml
index bfb7a60..d501cb4 100644
--- a/.github/workflows/autotools.yml
+++ b/.github/workflows/autotools.yml
@@ -1,4 +1,4 @@
-name: Autotools
+name: Autotools build
 
 on:
   push:
diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index d9fa86c..dfb78b2 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -1,4 +1,4 @@
-name: CMake
+name: CMake build
 
 on:
   push:
@@ -28,7 +28,7 @@
       - name: Prepare build directory
         run: mkdir ${{ env.BUILD }}
 
-      - name: Generate
+      - name: Configure
         run: cmake -S . -B ${{ env.BUILD }}
 
       - name: Build