Update htpc.md

docs/guides/htpc.md

@@ -263,7 +263,7 @@ We recommend using the [Pulse-Eight CEC Adapter](https://www.pulse-eight.com/p/1
 Although not officially rated to do so, the Pulse-Eight CEC Adapter has been proven to somewhat work with 4K 120Hz signals, though your milage may vary.
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-+++ CEC
+==- CEC
 
 Pulse-Eight hosts builds for [libCEC](https://libcec.pulse-eight.com) on their website. libCEC includes the `cec-tray` application, a tool that converts CEC button presses on a comapatible remote to keyboard commands in Windows, which can be used to control media player applications such as Kodi and mpv.
 
@@ -375,4 +375,4 @@ To run this script, double-click the `.ahk` file. Alternatively, you can place i
 
 +++
 
-+++
+==-