Increment: Modifies description of OverrideAuthority()

Author: Aditya-Sood

resolver/resolver.go

@@ -325,6 +325,7 @@ type Resolver interface {
 // By default, the authority used is target.Endpoint().
 type AuthorityOverrider interface {
 	// OverrideAuthority returns the authority to use for a ClientConn with the
-	// given target. It must not perform I/O or any other blocking operations.
+	// given target. The implementation must generate it without blocking,
+	// typically in line, and must keep it unchanged.
 	OverrideAuthority(Target) string
 }