Minor Typo Fixes in Documentation and Comments (#1104)

Description:
This pull request corrects minor typos in documentation and inline
comments to improve clarity and maintain code quality.

api/agnostic/doc.go

···
-// Package indigo/api/agnositc provides schema-agnostic helpers for fetching records from the network.
+// Package indigo/api/agnostic provides schema-agnostic helpers for fetching records from the network.
 //
 // These are variants of endpoints in indigo/api/atproto.
 package agnostic

search/parse_query.go

···
 
 		switch tokParts[0] {
 		case "did":
-			// Used as a hack for `from:me` when suppplied by the client
+			// Used as a hack for `from:me` when supplied by the client
 			did, err := syntax.ParseDID(p)
 			if err != nil {
 				continue