update wsl to include i2c definitions and pin map

docs/hardware/devices/heltec/buttons.mdx

@@ -2,7 +2,7 @@
 id: buttons
 title: Hardware Buttons
 sidebar_label: Buttons
-sidebar_position: 3
+sidebar_position: 1
 ---
 
 ## Functionality

docs/hardware/devices/heltec/enclosures.mdx

@@ -2,7 +2,7 @@
 id: enclosures
 title: Enclosures
 sidebar_label: Enclosures
-sidebar_position: 3
+sidebar_position: 2
 ---
 
 import Tropho from "/img/enclosures/3dp-tropho-heltec32.png";

docs/hardware/devices/heltec/index.mdx

@@ -145,9 +145,20 @@ Not recommended because of design issues! Support is being phased out. Use V3 in
 
 ## Features
 
-- no display
+- No display.
-- User and Reset switches
+- User and Reset switches.
-- No GPS
+- Additional GPIO availability.
+- No GPS.
+
+### Meshtastic I2C Definitions
+- SCL: GPIO47
+- SDA: GPIO48
+
+### Pin Map
+
+![HTIT-WSL_V3_PIN_MAP](/img/hardware/HTIT-WSL_V3_PIN_MAP.png)
+
+Image Source: [Heltec](https://resource.heltec.cn/download/Wireless_Stick_Lite_V3/HTIT-WSL_V3.png)
 
 ## Resources