Make clang-tidy output use one print() call (#231)

Author: calcmogul

wpiformat/wpiformat/clangtidy.py

@@ -66,8 +66,7 @@ def run_standalone(self, config_file, name):
         lines = filtered_lines
 
         if lines:
-            print("== clang-tidy " + name + " ==")
-            print("\n".join(lines))
+            print(f"== clang-tidy {name} ==\n" + "\n".join(lines))
             return False
 
         return True