follow ~/.zshrc and ~/.p10k.zsh symlinks

When the user tells the configuration wizard to apply
changes to ~/.zshrc and ~/.p10k.zsh and these files
are symlinks, apply changes to the targets.

see #426

internal/configure.zsh

@@ -3,9 +3,10 @@ typeset -gr __p9k_wizard_lines=21
 typeset -gr __p9k_zd=${ZDOTDIR:-$HOME}
 typeset -gr __p9k_zd_u=${${${(q)__p9k_zd}/#(#b)${(q)HOME}(|\/*)/'~'$match[1]}//\%/%%}
 typeset -gr __p9k_cfg_basename=.p10k.zsh
-typeset -gr __p9k_cfg_path=$__p9k_zd/$__p9k_cfg_basename
+typeset -gr __p9k_cfg_path_o=$__p9k_zd/$__p9k_cfg_basename
+typeset -gr __p9k_cfg_path=${__p9k_cfg_path_o:A}
 typeset -gr __p9k_cfg_path_u=$__p9k_zd_u/$__p9k_cfg_basename
-typeset -gr __p9k_zshrc=$__p9k_zd/.zshrc
+typeset -gr __p9k_zshrc=${${:-$__p9k_zd/.zshrc}:A}
 typeset -gr __p9k_zshrc_u=$__p9k_zd_u/.zshrc
 typeset -gr __p9k_root_dir_u=${${${(q)__p9k_root_dir}/#(#b)${(q)HOME}(|\/*)/'~'$match[1]}//\%/%%}
 
@@ -61,7 +62,7 @@ function _p9k_can_configure() {
 
 function p9k_configure() {
   emulate -L zsh
-  setopt no_hist_expand extended_glob
+  setopt no_hist_expand extended_glob no_prompt_bang prompt_{percent,subst} no_aliases
   (
     set -- -f
     source $__p9k_root_dir/internal/wizard.zsh

internal/wizard.zsh

@@ -1410,12 +1410,12 @@ function ask_zshrc_edit() {
   if [[ -e $__p9k_zshrc ]]; then
     zshrc_content="$(<$__p9k_zshrc)" || quit -c
     local lines=(${(f)zshrc_content})
-    local f0=$__p9k_cfg_path
+    local f0=$__p9k_cfg_path_o
     local f1=${(q)f0}
     local f2=${(q-)f0}
     local f3=${(qq)f0}
     local f4=${(qqq)f0}
-    local g1=${${(q)__p9k_cfg_path}/#(#b)${(q)HOME}\//'~/'}
+    local g1=${${(q)__p9k_cfg_path_o}/#(#b)${(q)HOME}\//'~/'}
     if [[ -n ${(@M)lines:#(#b)[^#]#([^[:IDENT:]]|)source[[:space:]]##($f1|$f2|$f3|$f4|$g1)(|[[:space:]]*|'#'*)} ]]; then
       zshrc_has_cfg=1
     fi