JNG-3391 Fixing documentation

README.adoc

@@ -141,8 +141,8 @@ Default to: `${basedir}/.flutter`
 <5> Environment variables added to the execution of `flutter`.
 
 <6> Parallel build enabled in maven.
-Maven supports parallel build with `-T` parameter. The plugin supports parallel build with limitations. When several flutter project is
-built in parallel `pub get` `pub clean` and some other commands which is related directly to flutter dependency itself can cause harm. To avoid
+Maven supports parallel build with `-T` option. The plugin supports parallel build with limitations. When several flutter projects are
+built in parallel `pub get` `pub clean` and some other commands which are related directly to flutter itself can cause harm. To avoid this situation
 the plugin execution is synchronized by default. There are some project specific build steps whivh can be run parallel, for example compile, build runner.
 
 This property can be defined in command line with `-Dflutter-parallel=false`