message: makefile: fix a typo in of INSTALL_DIR_PREFIC
  Fix a typo in of INSTALL_DIR_PREFIC, it should be INSTALL_DIR_PREFIX.
diff: @@ -99,7 +99,7 @@ clean:
  ${CARGO} clean
  install: release
  - @sudo mkdir -m 755 -p $(INSTALL_DIR_PREFIC)
  + @sudo mkdir -m 755 -p $(INSTALL_DIR_PREFIX)
  @sudo install -m 755 target/release/nydusd $(INSTALL_DIR_PREFIX)/nydusd
  @sudo install -m 755 target/release/nydus-image $(INSTALL_DIR_PREFIX)/nydus-image
  @sudo install -m 755 target/release/nydusctl $(INSTALL_DIR_PREFIX)/nydusctl
  @@ -154,7 +154,7 @@ contrib-clean: nydusify-clean ctr-remote-clean \
  nydus-overlayfs-clean docker-nydus-graphdriver-clean
  contrib-install:
  - @sudo mkdir -m 755 -p $(INSTALL_DIR_PREFIC)
  + @sudo mkdir -m 755 -p $(INSTALL_DIR_PREFIX)
  @sudo install -m 755 contrib/ctr-remote/bin/ctr-remote $(INSTALL_DIR_PREFIX)/ctr-remote
  @sudo install -m 755 contrib/docker-nydus-graphdriver/bin/nydus-graphdriver $(INSTALL_DIR_PREFIX)/nydus-overlayfs
  @sudo install -m 755 contrib/nydus-overlayfs/bin/nydus-overlayfs $(INSTALL_DIR_PREFIX)/nydus-overlayfs
  