[fix] #15 keyword 조회 api 이름 변경

src/main/java/org/gachon/checkmate/domain/post/controller/PostController.java

@@ -23,7 +23,7 @@ public ResponseEntity<SuccessResponse<?>> searchTextPost(@UserId final Long user
         return SuccessResponse.ok(responseDto);
     }
 
-    @GetMapping("/search/{key}")
+    @GetMapping("/{key}")
     public ResponseEntity<SuccessResponse<?>> searchKeyWordPost(@UserId final Long userId,
                                                                 @PathVariable final String key,
                                                                 @RequestParam final String type,