Updated examples (markdown)

examples.md

@@ -146,6 +146,7 @@ Integration with [z](https://github.com/rupa/z), like normal z when used with
 arguments but displays an fzf prompt when used without.
 
 ```sh
+unalias z
 z() {
   if [[ -z "$*" ]]; then
     cd "$(_z -l 2>&1 | sed -n 's/^[ 0-9.,]*//p' | fzf)"
@@ -159,6 +160,7 @@ Here is another version that also supports relaunching z with the arguments
 for the previous command as the default input by using zz
 
 ```sh
+unalias z
 z() {
   if [[ -z "$*" ]]; then
     cd "$(_z -l 2>&1 | sed -n 's/^[ 0-9.,]*//p' | fzf)"