ci: rearrange doc test to shorten the testing time (#975)

* feat(ci): rearrange doc test to shorten the testing time

* doc(ci): improve the names of jobs

* ci: use shorter name for better visualization

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ env:
 
 jobs:
   check:
-    name: Run checks on ${{ matrix.os }}
+    name: Lints and doc tests on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -66,8 +66,11 @@ jobs:
       - name: Perform no_std checks
         run: cargo check --bin nostd_check --target x86_64-unknown-none --manifest-path ci/nostd-check/Cargo.toml
 
+      - name: Run doctests
+        run: cargo test --doc
+
   test:
-    name: Run tests on ${{ matrix.os }}
+    name: Unit tests on ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -105,9 +108,6 @@ jobs:
         if: ${{ matrix.os == 'ubuntu-latest' }}
         run: cargo nextest run -p zenohd --no-default-features
 
-      - name: Run doctests
-        run: cargo test --doc
-
   valgrind:
     name: Memory leak checks
     runs-on: ubuntu-latest