Unsplit the string literal so the sv literal works properly

Author: wravery

test/PegtlExecutableTests.cpp

@@ -156,8 +156,8 @@ TEST(PegtlExecutableCase, InvalidStringEscapeSequence)
 		using namespace std::literals;
 
 		ASSERT_NE(nullptr, e.what());
-		EXPECT_TRUE("InvalidStringEscapeSequence:1:31: parse error matching struct "
-					"graphql::peg::string_escape_sequence_content"sv
+		EXPECT_TRUE(
+			"InvalidStringEscapeSequence:1:31: parse error matching struct graphql::peg::string_escape_sequence_content"sv
 			== e.what())
 			<< e.what();
 		caughtException = true;