zsh: add message about installing plugins

.zshrc

@@ -15,7 +15,7 @@ ${SKIP_PLUGINS:-false} || {
          print -P "%F{33}▓▒░ %F{220}Installing %F{33}DHARMA%F{220} Initiative Plugin Manager (%F{33}zdharma-continuum/zinit%F{220})…%f"
          command mkdir -p "$ZINIT_HOME_DIR" && command chmod g-rwX "$ZINIT_HOME_DIR"
          command git clone https://github.com/zdharma-continuum/zinit "$ZINIT_HOME_DIR/bin" && \
-            print -P "%F{33}▓▒░ %F{34}Installation successful.%f%b" || \
+            print -P "%F{33}▓▒░ %F{34}Installation successful.%f%b\nPlease wait while plugins install." || \
             print -P "%F{160}▓▒░ The clone has failed.%f%b"
       fi