small edits to be more clear

Author: kenman345

obip-0002.md

@@ -22,7 +22,7 @@ to allow users to find the content they're looking for. OpenBazaar 1.0 relies
 heavily on duosear.ch to locate good content.
 
 To decentralize this experience as much as possible the OB1 team has proposed to
-create a standard API that _anybody_ may fulfil and plug into the client to give
+create a standard API that _anybody_ may fulfill and plug into the client to give
 the user an in-app experience that is much richer than we can currently provide.
 
 While some popular implementations may be provided by default in the reference
@@ -169,8 +169,8 @@ The entry point response from `curl example.com`:
 
 - `options` is a list of filters that are displayed with search results to
 allow for more refined searching. It is a completely optional value; they
-are not required. How a Service handled given options is completely up to
-them. The client on requires a given structure for announcing the filters
+are not required. What options a Service will handle is completely up to
+them. The client simply requires the proper structure for announcing the filters
 so they may be displayed in the client application. There are no special
 options, they are treated equally and rendered in the order given. A few
 example options are shown above, but are not required or "blessed" in