Update README.md

Author: ntkme

Diff for: lib/src/embedded/README.md

@@ -32,7 +32,7 @@ communicate with their protocol buffer equivalents.
 The way Dart VM launches lightweight isolates versus Node.js launches worker
 threads are very different.
 
-In Dart VM, the lightweight isolates shares program structures like loaded
+In Dart VM, the lightweight isolates share program structures like loaded
 libraries, classes, functions, etc., even including JIT optimized code. This
 allows main isolate to spawn child isolate with a reference to the entry point
 function.
@@ -56,10 +56,10 @@ function.
 In Node.JS, the worker threads do not share program structures. In order to
 launch a worker thread, it needs an entry point file, with the entry point
 function effectly hard-coded in the entry point file. While it's possible
-to have a separate entry point file for the worker threads, it's requires more
-complex packaging changes with `cli_pkg`, therefore the main thread the worker
-threads shares [the same entry point file](js/executable.dart), and the entry
-point file will decide what to run depends on `worker_threads.isMainThread`.
+to have a separate entry point file for the worker threads, it requires more
+complex packaging changes with `cli_pkg`, therefore the main thread and the
+worker threads share [the same entry point file](js/executable.dart), which
+decides what to run based on `worker_threads.isMainThread`.
 
 ```
   if (worker_threads.isMainThread) {                                                                 if (worker_threads.isMainThread) {