Fix navigation.replace documents

Author: bouzuya

versioned_docs/version-6.x/native-stack-navigator.md

@@ -660,7 +660,7 @@ Replaces the current screen with a new screen in the stack. The method accepts f
 - `params` - _object_ - Screen params to pass to the destination route.
 
 ```js
-navigation.push('Profile', { owner: 'Michaś' });
+navigation.replace('Profile', { owner: 'Michaś' });
 ```
 
 #### `push`

versioned_docs/version-7.x/native-stack-navigator.md

@@ -658,7 +658,7 @@ Replaces the current screen with a new screen in the stack. The method accepts f
 - `params` - _object_ - Screen params to pass to the destination route.
 
 ```js
-navigation.push('Profile', { owner: 'Michaś' });
+navigation.replace('Profile', { owner: 'Michaś' });
 ```
 
 #### `push`