Update typo in render-pipeline.md

Change to singular, a tree (without "s").

Author: JiovannaManriquez

docs/render-pipeline.md

@@ -9,7 +9,7 @@ The React Native renderer goes through a sequence of work to render React logic
 
 The render pipeline can be broken into three general phases:
 
-1. **Render:** React executes product logic which creates a [React Element Trees](architecture-glossary#react-element-tree-and-react-element) in JavaScript. From this tree, the renderer creates a [React Shadow Tree](architecture-glossary#react-shadow-tree-and-react-shadow-node) in C++.
+1. **Render:** React executes product logic which creates a [React Element Tree](architecture-glossary#react-element-tree-and-react-element) in JavaScript. From this tree, the renderer creates a [React Shadow Tree](architecture-glossary#react-shadow-tree-and-react-shadow-node) in C++.
 2. **Commit**: After a React Shadow Tree is fully created, the renderer triggers a commit. This **promotes** both the React Element Tree and the newly created React Shadow Tree as the “next tree” to be mounted. This also schedules calculation of its layout information.
 3. **Mount:** The React Shadow Tree, now with the results of layout calculation, is transformed into a [Host View Tree](architecture-glossary#host-view-tree-and-host-view).