[docs] Fix 404 link to migration pages

Issue from #43054

docs/data/material/migration/migration-grid-v2/migration-grid-v2.md

@@ -4,9 +4,9 @@
 
 ## Why you should migrate
 
-Grid v2 has several new feature and many improvements over the original:
+Grid v2 has several new features and many improvements over the original:
 
-- Grid v2 uses CSS variables which remove CSS specificity from class selectors.
+- Grid v2 uses CSS variables which removes CSS specificity from class selectors.
   Now you can use `sx` prop on the Grid to control any style you'd like.
 - All grids are considered items without specifying the `item` prop.
 - The long-awaited [offset feature](/material-ui/react-grid2/#offset) gives you more flexibility for positioning.
@@ -18,7 +18,7 @@ The Grid v2 is introduced in Material UI v5, so you have to follow the [Materia
 
 ## With Material UI v5
 
-The migration is expected to be smooth since most of the APIs remains the same.
+The migration is expected to be smooth since most of the APIs remain the same.
 There is one breaking change that we want to clarify:
 The default implementation of the negative margin in Grid v2 is spread equally on all sides.
 
@@ -80,7 +80,7 @@ The Grid v2 is marked as stable in Material UI v6, so the `Unstable_` prefix is
 ```
 
 Alongside the stabilization, the API has been improved.
-You can see the changes and further details of how to migrate in the [Material UI v6 migration guide](/material-ui/migrating-to-v6/).
+You can see the changes and further details on how to migrate in the [Material UI v6 migration guide](/material-ui/migration/migrating-to-v6/).
 
 Finally, the original Grid component is deprecated and will be removed in the future, so we highly encourage you to migrate to Grid v2.