Creating a React Plugin: 1 Grammar Update - Update create_plugin.md (facebook#7104)

Author: DocAdam

packages/lexical-website/docs/react/create_plugin.md

@@ -70,6 +70,6 @@ TwitterPlugin is just a React component that accesses the Lexical editor via Rea
 1. Verifies that there is a TweetNode registered on the editor (if you forget to register the node, you can't do #2)
 2. registers a "command", passing a callback that will run when that command is dispatched. The command callback creates and inserts a TweetNode in the editor.
 
-You can see how [TwitterPlugin is used in the playground](https://github.com/facebook/lexical/blob/0775ab929e65723433626fa8c25900941e7f232f/packages/lexical-playground/src/Editor.tsx#L137). It's added it as a child of a LexicalComposer component, which does the job of providing the Context necessary for access to the editor instance. To actually trigger this command callback and insert a [TweetNode](https://github.com/facebook/lexical/blob/b0fa38615c03f1c4fc7c8c5ea26412b723770e55/packages/lexical-playground/src/nodes/TweetNode.tsx#L212), we have a [button](https://github.com/facebook/lexical/blob/b0fa38615c03f1c4fc7c8c5ea26412b723770e55/packages/lexical-playground/src/plugins/ToolbarPlugin.tsx#L534) that "dispatches" the Tweet command we registered in the plugin.
+You can see how [TwitterPlugin is used in the playground](https://github.com/facebook/lexical/blob/0775ab929e65723433626fa8c25900941e7f232f/packages/lexical-playground/src/Editor.tsx#L137). It's added as a child of a LexicalComposer component, which does the job of providing the Context necessary for access to the editor instance. To actually trigger this command callback and insert a [TweetNode](https://github.com/facebook/lexical/blob/b0fa38615c03f1c4fc7c8c5ea26412b723770e55/packages/lexical-playground/src/nodes/TweetNode.tsx#L212), we have a [button](https://github.com/facebook/lexical/blob/b0fa38615c03f1c4fc7c8c5ea26412b723770e55/packages/lexical-playground/src/plugins/ToolbarPlugin.tsx#L534) that "dispatches" the Tweet command we registered in the plugin.
 
 While the TwitterPlugin registers a command that inserts a custom node, this is only one example of what can be done with a plugin. To get a better idea of what's possible, take a look at the [plugins defined in the playground](https://github.com/facebook/lexical/tree/0775ab929e65723433626fa8c25900941e7f232f/packages/lexical-playground/src/plugins).