README: update

README.md

@@ -1,4 +1,4 @@
-### About
+## About
 
 portzap is a utility for staying up to date with the
 [HardenedBSD ports tree](https://hardenedbsd.org).
@@ -7,19 +7,19 @@ The transient copy can be created, and updated by an unprivileged user account
 who is a member of the `_portzap` group. The transient copy can then be installed
 into the `/usr/ports` directory by root.
 
-### Usage
+## Usage
 
-* **portzap clone** <br>
+* `portzap clone` <br>
   This command clones HardenedBSD's ports tree into `/home/_portzap/ports`.
 
-* **portzap pull** <br>
+* `portzap pull` <br>
   This command pulls updates into `/home/_portzap/ports`.
 
-* **portzap install** <br>
+* `portzap install` <br>
   This command should be run as root. <br>
   The command installs `/home/_portzap/ports` into `/usr/ports`.
 
-### Sources
+## Sources
 
 * [Source code (git.hardenedbsd.org)](https://git.hardenedbsd.org/0x1eef/portzap)
 * [Source code (GitHub)](https://github.com/0x1eef/portzap)