Updated Working on macOS (markdown)

Working-on-macOS.md

@@ -174,16 +174,20 @@ Just search for your app in dump.txt.
 You could just as easily do a zip I suppose, but DMGs are fashionable aren't they?
 
 Here's a 32 megabyte dmg:
-````
-    hdiutil create -size 32m -fs HFS+ -volname "My App" my_app_writeable.dmg
-    hdiutil attach test.dmg
-````
-
-This should tell you something like /dev/disk3 or something. Make a note of that, you'll need it.
-
-Drag your app into the dmg. Then run this, replacing disk999 with whatever /dev/disk was specified.
-````
-    hdiutil detach /dev/disk999
-    hdiutil convert my_app_writeable.dmg -format UDZO -o my_app.dmg
-````
-There you go. my_app.dmg is ready to be sent to all your most trusted game critics.
+1. Create the writeable dmg.
+```
+hdiutil create -size 32m -fs HFS+ -volname "My App" my_app_writeable.dmg
+```
+2. This should tell you something like `/dev/disk3` or something. Make a note of that, you'll need it.
+```
+hdiutil attach my_app_writeable.dmg
+```
+3. Drag your app into the dmg. Then run this, replacing `disk999` with whatever `/dev/disk` was specified.
+```
+hdiutil detach /dev/disk999
+```
+4. Convert to `my_app.dmg`.
+```
+hdiutil convert my_app_writeable.dmg -format UDZO -o my_app.dmg
+```
+5. There you go. `my_app.dmg` is ready to be sent to all your most trusted game critics.