Update index.d.ts

types/rc/index.d.ts

@@ -7,13 +7,14 @@ declare function rc(
 	name: string,
 	defaults?: any,
     /**
-     * Parsed argv object.  For example, if args were '--foo bar' then this value might be {foo: 'bar'}
-     * If null then rc's default argv parser will parse process.argv
+     * Parsed argv object. For example, if args is `--foo bar`, then this value should be `{foo: 'bar'}`
+     * If `argv` is `null` or `undefined`, then `rc`'s default parser will parse `process.argv`.
      */
 	argv?: {} | null,
     /**
      * Custom config file parser.
-      * Will be passed the string contents of each discovered config file and should return a parsed object dictionary.
+     * This function will be passed the string contents of each
+     * discovered configuration file should return a parsed object dictionary.
      */
 	parse?: ((content: string) => any) | null
 ): any;