Apply suggestions from code review

Co-authored-by: Sutou Kouhei <kou@cozmixng.org>

Author: rok

ci/scripts/python_test_type_annotations.sh

@@ -35,8 +35,8 @@ if [ "${PYARROW_TEST_ANNOTATIONS}" == "ON" ]; then
   pushd ${pyarrow_dir}
   mypy
   pyright
-  ty check;
+  ty check
   popd
 else
-  echo "Skipping type annotation tests";
+  echo "Skipping type annotation tests"
 fi