run the markdown crate's tests during rustfmt CI

ci/build_and_test.bat

diff --git a/ci/build_and_test.bat b/ci/build_and_test.bat
index 16608a4..ec3425a 100755
--- a/ci/build_and_test.bat
+++ b/ci/build_and_test.bat
@@ -17,3 +17,8 @@
 cd config_proc_macro || exit /b 1
 cargo build --locked || exit /b 1
 cargo test || exit /b 1
+
+cd ../markdown || exit /b 1
+:: Build markdown crate and generate tests
+cargo build --locked -F gen-tests || exit /b 1
+cargo test || exit /b 1

ci/build_and_test.sh

diff --git a/ci/build_and_test.sh b/ci/build_and_test.sh
index 207da36..3cdf15e 100755
--- a/ci/build_and_test.sh
+++ b/ci/build_and_test.sh
@@ -21,3 +21,8 @@
 cd config_proc_macro
 cargo build --locked
 cargo test
+
+cd ../markdown
+# Build markdown crate and generate tests
+cargo build --locked -F gen-tests
+cargo test