fix(2x Grid): 2x grid word capitalization (#1358)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

src/pages/2x-grid.mdx

@@ -17,7 +17,7 @@ focus on your creative idea.
 
 <AnchorLinks>
   <AnchorLink>Divisions of two</AnchorLink>
-  <AnchorLink>Constructing the 2x grid</AnchorLink>
+  <AnchorLink>Constructing the 2x Grid</AnchorLink>
   <AnchorLink>Base unit</AnchorLink>
   <AnchorLink>Spatial relationships</AnchorLink>
   <AnchorLink>2x Grid in UI</AnchorLink>
@@ -141,7 +141,7 @@ make decisions and organize your content.
 </ImageGallery>
 
 
-## Constructing the 2x grid
+## Constructing the 2x Grid
 
 Each application of the grid can require a different grid structure. When
 constructing the grid, keep in mind these different types of grids and choose
@@ -299,7 +299,7 @@ canvas divisions. Columns and rows must always remain equal.
 
 ## Base unit
 
-If the 2x grid gives your designs structure, base units give them precision.
+If the 2x Grid gives your designs structure, base units give them precision.
 Using a base unit will establish relationships between your grid proportions,
 typography, dimensions of shapes, and space between elements. You can choose
 either the mini unit or a baseline unit to build your grid and spatial
@@ -500,7 +500,7 @@ For detailed guidance on how to apply the 2x Grid system to products and user
 interfaces, please visit
 [Carbon Design System](https://carbondesignsystem.com/).
 
-![2x grid-UI](images/2x_UI.png)
+![2x Grid-UI](images/2x_UI.png)
 
 <Row className="resource-card-group">
 <Column colMd={4} colLg={4} noGutterSm>
@@ -544,7 +544,7 @@ required, the canvas can be futher subdivided into 16 columns. It is recommended
 to have all elements ‘snap to grid’ with 30px increments in order to ensure
 proper alignments within the overall layout.
 
-![2x grid-video](images/2xgrid_video.png)
+![2x Grid-video](images/2xgrid_video.png)
 
 <Row>
 <Column colMd={4} colLg={4} noGutterSm>