standardize t deck, echo, and watch headings

docs/hardware/devices/tdeck/index.mdx

@@ -7,7 +7,7 @@ sidebar_position: 5
 
 The T-Deck is a compact device featuring a 2.8-inch IPS LCD touch screen with a resolution of 320x240 pixels, integrated with a small keyboard, trackball, microphone and speaker running on an ESP32-S3 dual-core processor.
 
-### Specifications
+## Specifications
 
 - **MCU**
   - ESP32-S3FN16R8 (WiFi & Bluetooth 5 LE)
@@ -22,14 +22,14 @@ The T-Deck is a compact device featuring a 2.8-inch IPS LCD touch screen with a
 - **Connectors**
   - USB-C
 
-### Features
+## Features
 
 - LILYGO® backlit T-Keyboard
 - Trackball
 - 2.8 inch ST7789 SPI Interface IPS LCD (Resolution: 320 x 240)
 - I2S Speaker/Microphone
 
-## Flashing the T-Deck
+## Flashing
 
 If you are having issues flashing the T-Deck, especially if it's your first attempt, you may need to manually place the device into Espressif's Firmware Download mode. Please follow the process below to do so.
 
@@ -49,7 +49,7 @@ The following process will manually place the device into the Espressif Firmware
 
 With the device now in the Espressif Firmware Download mode, you can proceed with flashing using one of the supported flashing methods. It's generally recommended to use the [Web Flasher](https://flasher.meshtastic.org/). You can select "T Deck" from the device drop-down.
 
-### Resources
+## Resources
 
 - Firmware file: `firmware-t-deck-X.X.X.xxxxxxx.bin`
 - Purchase links:

docs/hardware/devices/techo/index.mdx

@@ -9,7 +9,7 @@ The T-Echo is the latest device to be release by LILYGO® supporting a low power
 
 Further information on the LILYGO® T-Echo devices can be found on LILYGO®'s [GitHub page](https://github.com/Xinyuan-LilyGO/LilyGO-T-Echo).
 
-### Specifications
+## Specifications
 
 - **MCU**
   - nRF52840 (Bluetooth BLE 5.0 & NFC)
@@ -24,14 +24,14 @@ Further information on the LILYGO® T-Echo devices can be found on LILYGO®'s [G
 - **Connectors**
   - U.FL antenna connector
 
-### Features
+## Features
 
 - Reset, Program and capacitive touch buttons
 - 1.54" eInk display
 - Optional BME280 - Humidity and Pressure Sensor
 - Comes with a case and battery
 
-### Resources
+## Resources
 
 - Firmware file: `firmware-t-echo-2.x.x.uf2`
 - Purchase links:

docs/hardware/devices/twatch/index.mdx

@@ -7,7 +7,7 @@ sidebar_position: 6
 
 The T-Watch S3 is a compact wearable device featuring a 1.54-inch IPS LCD touch screen with a resolution of 240x240 pixels. It includes haptic feedback, an integrated microphone, speaker, real-time clock, and a three-axis accelerometer.
 
-### Specifications
+## Specifications
 
 - **MCU**
   - ESP32-S3 (WiFi & Bluetooth 5 LE)
@@ -22,7 +22,7 @@ The T-Watch S3 is a compact wearable device featuring a 1.54-inch IPS LCD touch
 - **Connectors**
   - Micro-USB
 
-### Features
+## Features
 
 - 1.54 inch ST7789V TFT LCD (Resolution: 240 x 240)
 - DRV2605 Haptic Driver
@@ -31,7 +31,7 @@ The T-Watch S3 is a compact wearable device featuring a 1.54-inch IPS LCD touch
 - BMA423 Three Axis accelerometer
 - Real-Time Clock
 
-## Flashing the T-Watch S3
+## Flashing
 
 If you are having issues flashing the T-Watch S3, especially if it's your first attempt, you may need to manually place the device into Espressif's Firmware Download mode. Please follow the process below to do so.
 
@@ -54,7 +54,7 @@ The following process will manually place the device into the Espressif Firmware
 
 With the device now in the Espressif Firmware Download mode, you can proceed with flashing using one of the supported flashing methods. It's generally recommended to use the [Web Flasher](https://flasher.meshtastic.org/). You can select "T Watch S3" from the device drop-down.
 
-### Resources
+## Resources
 
 - Firmware file: `firmware-t-watch-X.X.X.xxxxxxx.bin`
 - Purchase links: