Rename contributors field to maintainers in package.json

Signed-off-by: Sora Morimoto <[email protected]>

Author: smorimoto

package.json

@@ -7,7 +7,7 @@
   "repository": "github:acacode/swagger-typescript-api",
   "license": "MIT",
   "author": "Sergey Volkov <[email protected]>",
-  "contributors": [
+  "maintainers": [
     "Sora Morimoto <[email protected]>"
   ],
   "type": "module",