Change description of handwritten generators to be more in phase the description given by the generate-example-set.sh script.

examples/mewyorkish-handwritten-rules.json

@@ -2,7 +2,7 @@
   "phonologies": [],
   "generators": [
     { "id": "mewyorkish-handwritten",
-      "description": "An handwritten rule-based generator for Mewyorkish.",
+      "description": "Mewyorkish (handwritten rules)",
       "phonology": "mewyorkish",
       "type": "rules",
       "rules": [

examples/polarian-handwritten-rules.json

@@ -2,7 +2,7 @@
   "phonologies": [],
   "generators": [
     { "id": "polarian-handwritten",
-      "description": "An handwritten rule-based generator for Polarian.",
+      "description": "Polarian (handwritten rules)",
       "phonology": "polarian",
       "type": "rules",
       "rules": [