Add HDZO manufacturer (#526)

* Add HDZO manufacturer

* Fix brackets :-)

Manufacturers.md

@@ -58,6 +58,7 @@ This is the official list of manufacturer ids (`manufacturer_id` in the target c
 |HAMO|Happymodel|http://www.happymodel.cn/|
 |HARC|HAKRC|https://www.hakrc.com/|
 |HBRO|Holybro|http://www.holybro.com/index.html|
+|HDZO|Divimath, Inc.|https://www.hd-zero.com/|
 |HEBI|Shenzhen High Energy Bili Co., Ltd.|http://www.coddar.net/|
 |HENA|Heli-Nation|https://www.heli-nation.com/|
 |HFOR|HIFIONRC|http://www.hifionrc.com/|