style: pre-commit.ci fixes

Author: pre-commit-ci[bot]

tests/AppTest.cpp

@@ -131,7 +131,7 @@ TEST_CASE_METHOD(TApp, "StrangeFlagNames", "[app]") {
     app.add_flag("-=");
     app.add_flag("--t\tt");
     app.add_flag("-{");
-    CHECK_THROWS_AS(app.add_flag("--t t"), CLI::ConstructionError); 
+    CHECK_THROWS_AS(app.add_flag("--t t"), CLI::ConstructionError);
     args = {"-=", "--t\tt"};
     run();
     CHECK(app.count("-=") == 1u);