fix spaces

.github/java.json

@@ -11,16 +11,16 @@
             ]
         },
     	{
-			"owner": "javac",
-			"pattern": [
-				{
-					"regexp": "^([^:]+):(\\d+): (warning|error): (.+?)$",
-					"file": 1,
-					"line": 2,
-					"severity": 3,
-					"message": 4
-				}
-			]
-       }
+            "owner": "javac",
+            "pattern": [
+                {
+                    "regexp": "^([^:]+):(\\d+): (warning|error): (.+?)$",
+                    "file": 1,
+                    "line": 2,
+                    "severity": 3,
+                    "message": 4
+                }
+            ]
+        }
     ]
 }