Listeners Lexical: 3 updates to spelling and grammar - Update listene…

…rs.md (facebook#7100)

packages/lexical-website/docs/concepts/listeners.md

@@ -2,7 +2,7 @@
 
 # Listeners
 
-Listeners are a mechanism that lets the Editor instance inform the user when a certain operation has occured. All listeners follow a reactive pattern where you can do an operation upon something happening in the future. All listeners also return a function that easily allows for the
+Listeners are a mechanism that lets the Editor instance inform the user when a certain operation has occurred. All listeners follow a reactive pattern where you can do an operation upon something happening in the future. All listeners also return a function that easily allows for the
 listener to be unregistered. Below are the different listeners that Lexical supports today:
 
 ## `registerUpdateListener`
@@ -31,7 +31,7 @@ The update listener callbacks receives a single argument containing the follow p
 - `tags` a Set of all tags that were passed to the update
 
 One thing to be aware of is "waterfall" updates. This is where you might schedule an update inside an update
-listener, as show below:
+listener, as shown below:
 
 ```js
 editor.registerUpdateListener(({editorState}) => {
@@ -48,7 +48,7 @@ editor.registerUpdateListener(({editorState}) => {
 ```
 
 The problem with this pattern is that it means we end up doing two DOM updates, when we likely could have
-done it in a single DOM update. This can have an impact on performance, which is important in text editor.
+done it in a single DOM update. This can have an impact on performance, which is important in a text editor.
 To avoid this, we recommend looking into [Node Transforms](https://lexical.dev/docs/concepts/transforms), which allow you to listen to node changes and
 transform them as part of the same given update, meaning no waterfalls!