[css-view-transitions-2] Updates for horizontal review (w3c#10284)

* Updates for horizontal review

* Apply suggestions from code review

Co-authored-by: vmpstr <vmpstr@chromium.org>

---------

Co-authored-by: vmpstr <vmpstr@chromium.org>

Author: khushalsagar

css-view-transitions-2/Overview.bs

@@ -131,8 +131,8 @@ With same-document view transitions, the author starts a view transition using J
 In cross-document view transition, what triggers a view transition is a navigation between two documents, as long as the following conditions are met:
 
 	* Both documents are of the [=same origin=];
-	* The page is visible throughout the entire course of the navigatiion;
-	* the navigation is initiated by the page, e.g. by clicking a link or submitting a form, or is a {{NavigationType/traverse}} navigation (back/forward). This excludes, for example, navigations initiated by the URL bar;
+	* The page is visible throughout the entire course of the navigation;
+	* The user initiates the navigation by interacting with the page, e.g. by clicking a link or submitting a form; or by interacting with the browser UI to do a {{NavigationType/traverse}} navigation (back/forward). This excludes, for example, navigations initiated by the URL bar;
 	* the navigation didn't include cross-origin redirects; and
 	* both documents opted in to cross-document view transitions, using the ''@view-transition'' rule.
 
@@ -232,7 +232,7 @@ Similar to a same-document view transition, the author can now select different
 		1. This {{ViewTransition}}'s <code>{{ViewTransition/updateCallbackDone}}</code> promise is already resolved,
 			and its [=captured elements=] are populated from the old {{Document}}.
 
-		1. This is another opportunity for the author customize the transition, e.g. by mutating its {{ViewTransition/types}}, or {{ViewTransition/skipTransition()|skip}} it altogether.
+		1. This is another opportunity for the author to customize the transition, e.g. by mutating its {{ViewTransition/types}}, or {{ViewTransition/skipTransition()|skip}} it altogether.
 
 		1. The state of the new document is [=capture the new state|captured=] as the "new" state of the transition.