fix: improve exception message formatting in LuaTests

tests/Lua.Tests/LuaTests.cs

@@ -45,7 +45,7 @@ public class LuaTests
             }
 
             var line = luaTraceback.FirstLine;
-            throw new Exception($"{path}:line {line}\n{e.InnerException}\n {e}");
+            throw new Exception($"{path}:{line} \n{e.InnerException}\n {e}");
         }
     }
 }