testing different sign for added files in git prompt status

zsh/omz-custom/cinaeco.zsh-theme

@@ -18,7 +18,7 @@ ZSH_THEME_GIT_PROMPT_UNTRACKED="?"
 ZSH_THEME_GIT_TREE_MODIFIED="+"
 ZSH_THEME_GIT_TREE_DELETED="x"
 ZSH_THEME_GIT_INDEX_MODIFIED="+"
-ZSH_THEME_GIT_INDEX_ADDED="+"
+ZSH_THEME_GIT_INDEX_ADDED="±"
 ZSH_THEME_GIT_INDEX_DELETED="x"
 ZSH_THEME_GIT_INDEX_RENAMED="r"
 ZSH_THEME_GIT_INDEX_COPIED="c"