PIString::fromAscii() new overload

libs/main/system/piplugin.cpp

@@ -56,7 +56,7 @@
  * If you using user version check, you should set it
  * with macro \a PIP_PLUGIN_SET_USER_VERSION(version).
  * When plugin is successfully loaded and checked,
- * you can load your custom cymbols with function
+ * you can load your custom symbols with function
  * \a resolve(name), similar to PILibrary.
  * \note You should use PIP_PLUGIN_EXPORT and "export "C""
  * with functions you want to use with \a resolve(name)!