Changed mkdcd to mcd

`mcd` is much easier (to me, at least) to type and remember than mkdcd
and hasn't (in my experience) gotten in the way of anything else I've
needed to use.

[ticket: X]

modules/utility/README.md

@@ -126,7 +126,7 @@ Functions
   - `cdls` changes to a directory and lists its contents.
   - `dut` displays the grand total disk usage using human readable units.
   - `find-exec` finds files and executes a command on them.
-  - `mkdcd` makes a directory and changes to it.
+  - `mcd` makes a directory and changes to it.
   - `popdls` pops an entry off the directory stack and lists its contents.
   - `pushdls` pushes an entry onto the directory stack and lists its contents.
 

modules/utility/init.zsh

@@ -144,7 +144,7 @@ alias http-serve='python -m SimpleHTTPServer'
 #
 
 # Makes a directory and changes to it.
-function mkdcd {
+function mcd {
   [[ -n "$1" ]] && mkdir -p "$1" && builtin cd "$1"
 }