Improve wording of sourceMaps option (#298)

The old wording made it sound like souremaps weren't supported in minified builds.

src/i18n/en/docs/api.md

@@ -35,7 +35,7 @@ const options = {
   logLevel: 3, // 3 = log everything, 2 = log warnings & errors, 1 = log errors
   hmr: true, //Enable or disable HMR while watching
   hmrPort: 0, // The port the HMR socket runs on, defaults to a random free port (0 in node.js resolves to a random free port)
-  sourceMaps: true, // Enable or disable sourcemaps, defaults to enabled (not supported in minified builds yet)
+  sourceMaps: true, // Enable or disable sourcemaps, defaults to enabled (minified builds currently always create sourcemaps)
   hmrHostname: '', // A hostname for hot module reload, default to ''
   detailedReport: false // Prints a detailed report of the bundles, assets, filesizes and times, defaults to false, reports are only printed if watch is disabled
 };