Clarify notes

Author: noamr

fetch.bs

@@ -7091,11 +7091,11 @@ descendants share a quota of 384 kibibytes. That value is computed as such:
 
 <p class=note>This is called on navigation, when the source document of the navigation is the
 <a for=/>navigable</a>'s parent document. It potentially reserves either 64kb or 8kb of quota for
-the frame, if  the permissions policy allow. It is not observable to the cotnainer document whether
-the reserved quota was used in practice. This algorithm assumes that the container's document might
-delegate quota to the navigated frame, and the reserved quota would only apply in that case, and
-would be ignored if it ends up being shared. If quota was reserved and the document ends up being
-<a>same origin</a> with its parent, the quota would be
+the container and its navigable, if allowed permissions policy. It is not observable to the
+cotnainer document whether the reserved quota was used in practice. This algorithm assumes that the
+container's document might delegate quota to the navigated frame, and the reserved quota would only
+apply in that case, and would be ignored if it ends up being shared. If quota was reserved and the
+document ends up being <a>same origin</a> with its parent, the quota would be
 <a data-lt="potentially free deferred-fetch quota">freed</a>.
 
 <ol>