Fix image link in README.md

keyboard/hhkb/README.md

@@ -86,11 +86,11 @@ See **keymap.c**.
 
 ###Teensy++ installation
 Angled USB mini B adapter is used to install Teensy++ laterally.
-![doc/HHKB_img/teensy_install.jpg]
+![Teensy install](doc/HHKB_img/teensy_install.jpg)
 
 Bread baord wires are used to connect Teensy++.
-![doc/HHKB_img/teensy_wiring.jpg]
+![Teensy wiring](doc/HHKB_img/teensy_wiring.jpg)
-![doc/HHKB_img/connector_contact.jpg]
+![Connector](doc/HHKB_img/connector_contact.jpg)
 
 
 ###PJRC Teensy++ 2.0 connection