Update routers/api/v1/repo/issue.go

Co-Authored-By: guillep2k <18600385+guillep2k@users.noreply.github.com>

routers/api/v1/repo/issue.go

@@ -759,7 +759,7 @@ func AddIssueSubscription(ctx *context.APIContext) {
 	//   required: true
 	// - name: user
 	//   in: path
-	//   description: user witch subscribe to issue
+	//   description: user to subscribe
 	//   type: string
 	//   required: true
 	// responses: