standardize nano headings

docs/hardware/devices/nano/index.mdx

@@ -24,9 +24,11 @@ values={[
 
 <TabItem value="g2">
 
+## Nano G2
+
 The Nano G2 Ultra and Nano G1 Explorer have exactly the same Lora front-end circuit design and internal wideband Lora antenna. The primary design goal of the Nano G2 Ultra is to reduce power consumption and improve battery life by using the low power MCU NRF52840. The typical battery life is optimized to be about 3.5 days. As with the Nano G1 Explorer, the Nano G2 Ultra's design also takes into account the potential impact of the human body on its antenna performance, ensuring optimal RF performance even when carried in a pocket.
 
-### Nano G2 Ultra Specifications
+### Specifications
 
 - **MCU:**
   - NRF52840
@@ -42,7 +44,7 @@ The Nano G2 Ultra and Nano G1 Explorer have exactly the same Lora front-end circ
 - **Connectors:**
   - USB-C
 
-### Nano G2 Ultra Features
+### Features
 
 - Meshtastic pre-installed.
 - New internal GPS antenna that significantly reduces GPS lock time compared to the Nano G1. Additionally, the GPS module can be set to a low-power mode with the GPS physical switch.
@@ -66,11 +68,14 @@ Further information on the Nano G2 Ultra can be found on [Unit Engineering's Wik
 ![Nano G2 Ultra](/img/hardware/nano_g2_ultra.jpeg)
 
 </TabItem>
- <TabItem value="g1-e">
+
+<TabItem value="g1-e">
+
+## Nano G1 Explorer
 
 The Nano G1 Explorer, powered by Meshtastic, is a significant upgrade from the Nano G1. It incorporates the latest RF technologies from B&Q Consulting, featuring a new internal wide-band LoRa antenna that can support frequencies ranging from 815 MHz to 940 MHz. With this new antenna, combined with an optimized wide-band LoRa RF frontend circuit, the Nano G1 Explorer is capable of working with the majority of LoRa frequency bands worldwide without the need for antenna changes. The device's design also takes into account the potential impact of the human body on its antenna performance, ensuring optimal RF performance even when carried in a pocket.
 
-### Nano G1 Explorer Specifications
+### Specifications
 
 - **MCU:**
   - ESP32 WROOM (WiFi & Bluetooth)
@@ -86,7 +91,7 @@ The Nano G1 Explorer, powered by Meshtastic, is a significant upgrade from the N
 - **Connectors:**
   - USB-C
 
-### Nano G1 Explorer Features
+### Features
 
 - Meshtastic pre-installed.
 - New internal GPS antenna that significantly reduces GPS lock time compared to the Nano G1. Additionally, the GPS module can be set to a low-power mode with the GPS physical switch.
@@ -96,7 +101,7 @@ The Nano G1 Explorer, powered by Meshtastic, is a significant upgrade from the N
 - Internal Li-Polymer Battery Charger. _(An optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery can also be installed.)_
 - Buck-boost converter to provide stable 3.3V to the system even in the event the Li-Polymer battery voltage drops to as low as 2.5V. Supply voltage stability is very important to ensure that the performance of RF circuits meets design expectations.
 
-### Nano G1 Explorer Resources
+### Resources
 
 - Firmware file: `firmware-nano-g1-explorer-X.X.X.xxxxxxx.bin`
 - Official Purchase Links:
@@ -108,11 +113,14 @@ Further information on the Nano G1 can be found on [Unit Engineering's Wiki](htt
 ![Nano G1 Explorer](/img/hardware/nano_g1_explorer.jpeg)
 
 </TabItem>
+
 <TabItem value="g1">
 
+## Nano G1
+
 The Nano G1 is the first dedicated hardware device to be designed from scratch purely for Meshtastic by Neil Hao. It has been designed to be small and compact with the inclusion of a high quality internal PCB antenna.
 
-### Nano G1 Specifications
+### Specifications
 
 - **MCU**
   - ESP32 WROOM (WiFi & Bluetooth)
@@ -129,14 +137,14 @@ The Nano G1 is the first dedicated hardware device to be designed from scratch p
 - **Connectors**
   - USB-C
 
-### Nano G1 Features
+### Features
 
 - Meshtastic pre-installed
 - User button
 - 1.3 inch OLED screen
 - Buzzer
 
-### Nano G1 Resources
+### Resources
 
 - Firmware file: `firmware-nano-g1-X.X.X.xxxxxxx.bin`