Update README.md

Author: p-x9

README.md

@@ -66,10 +66,10 @@ all: # run in `prebuild`, `build`...
 
 The following environment variables are available in the script to refer to the Plugin context.
 
-- RUN_SCRIPT_TARGET_PACKAGE_DIR
+- RUN_SCRIPT_TARGET_PACKAGE_DIR 
  Path of the target package on which the plugin runs.
  The path obtained by `PackagePlugin.PluginContext.package.directory`
-- RUN_SCRIPT_PLUGIN_WORK_DIR
+- RUN_SCRIPT_PLUGIN_WORK_DIR 
  The path of a writable directory into which the plugin or the build commands it constructs can write anything it wants.
  The path obtained by `PackagePlugin.PluginContext.pluginWorkDirectory`