vendor: fix issue in readline option selector

Signed-off-by: Rohit Yadav <rohit@apache.org>
diff --git a/vendor/github.com/chzyer/readline/complete.go b/vendor/github.com/chzyer/readline/complete.go
index 9d19fa5..9ea15d2 100644
--- a/vendor/github.com/chzyer/readline/complete.go
+++ b/vendor/github.com/chzyer/readline/complete.go
@@ -47,13 +47,18 @@
 }
 
 func (o *opCompleter) writeRunes(candidate []rune) {
-	lastIndex := len(candidate)
+	detailIndex := len(candidate)
+	spaceFound := false
 	for idx, r := range candidate {
-		if r == '(' {
-			lastIndex = idx
+		if r == ' ' {
+			spaceFound = true
+		}
+		if spaceFound && r == '(' {
+			detailIndex = idx
+			break
 		}
 	}
-	o.op.buf.WriteRunes(candidate[:lastIndex])
+	o.op.buf.WriteRunes(candidate[:detailIndex])
 }
 
 func (o *opCompleter) doSelect() {