Fix a bunch of invalid rsi files (#13104)

Resources/Textures/Effects/extinguisherSpray.rsi/meta.json

@@ -4,6 +4,8 @@
         "x": 32,
         "y": 32
     },
+    "license": "CC BY-SA 3.0",
+    "copyright": "Taken from https://github.com/tgstation/tgstation at commit 9bebd81ae0b0a7f952b59886a765c681205de31f",
     "states": [
         {
             "name": "extinguish",
@@ -17,4 +19,4 @@
             ]
         }
     ]
-}
+}