message: Fix typo preventing compilation
  `idf.py build` returned:
  ../main/esp/app_camera_esp.h:46:27: error: 'FRAMESIZE_96x96'
  undeclared (first use in this function); did you mean
  'FRAMESIZE_96X96'?
diff: @@ -30,7 +30,7 @@ limitations under the License.
  #define CAMERA_PIXEL_FORMAT PIXFORMAT_GRAYSCALE
  /*
  - * FRAMESIZE_96x96, // 96x96
  + * FRAMESIZE_96X96, // 96x96
  * FRAMESIZE_QQVGA, // 160x120
  * FRAMESIZE_QQVGA2, // 128x160
  * FRAMESIZE_QCIF, // 176x144
  @@ -43,7 +43,7 @@ limitations under the License.
  * FRAMESIZE_SXGA, // 1280x1024
  * FRAMESIZE_UXGA, // 1600x1200
  */
  -#define CAMERA_FRAME_SIZE FRAMESIZE_96x96
  +#define CAMERA_FRAME_SIZE FRAMESIZE_96X96
  #if CONFIG_CAMERA_MODEL_WROVER_KIT
  #define PWDN_GPIO_NUM -1
  