Fix misnamed TypeScript export for createConnectMiddleware

Summary: Changelog: **[Types]** Fix TypeScript name for `createConnectMiddleware` export

Reviewed By: motiz88

Differential Revision: D46359488

fbshipit-source-id: 1b8c39cdede46f08383529446c71e28dd3493875

Author: huntie

packages/metro/types/index.d.ts

@@ -126,7 +126,7 @@ export function runMetro(
   options?: RunMetroOptions,
 ): Promise<MetroServer>;
 
-export function createConnectMiddleWare(
+export function createConnectMiddleware(
   config: ConfigT,
   options?: RunMetroOptions,
 ): Promise<MetroMiddleWare>;