Add terms to Splashpad preset (#705)

* In Houston they're called Water Spraygorunds
* Also called Spraygrounds

Author: EvanCarroll

data/presets/playground/splash_pad.json

@@ -7,5 +7,10 @@
     "tags": {
         "playground": "splash_pad"
     },
+    "terms": [
+        "pad",
+        "spray",
+        "water"
+    ],
     "name": "Play Splash Pad"
 }