docs(upgrade): fix typos (#2930)

Co-authored-by: James Daniels <[email protected]>

Author: Meistercoach83

docs/version-7-upgrade.md

@@ -1,6 +1,6 @@
 # Upgrading to AngularFire 7.0
 
-Intended to be run with Angular 12, AngularFire 7.0 allows you to take full advtange of the new tree-shakable Firebase JS SDK (v9) while also providing a compatible expirience with the prior API.
+Intended to be run with Angular 12, AngularFire 7.0 allows you to take full advantage of the new tree-shakable Firebase JS SDK (v9) while also providing a compatible experience with the prior API.
 
 `ng update @angular/fire`