Rename getSpaceInvitationCode to generateSpaceInvitationCode and update imports

src/space/controllers/space.controller.ts

@@ -124,6 +124,6 @@ export class SpaceController {
   async generateSpaceInvitationCode(
     @Param() params: GetSpaceParam,
   ): Promise<BaseResponseDto> {
-    return this.spaceService.getSpaceInvitationCode(params);
+    return this.spaceService.generateSpaceInvitationCode(params);
   }
 }