docs(nav-pop): fix typos & terminology (ionic-team#18947)

Author: rtpHarry

core/src/components/nav-pop/readme.md

@@ -1,6 +1,6 @@
 # ion-nav-pop
 
-`NavPop` is a component used the automatically go back in navigation. It is the element from of `NavController.pop()`
+`NavPop` is a component used to automatically go back in navigation. It is the component form of `NavController.pop()`
 
 
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