Clean up picture naming

docs/helios64/button.md

@@ -1,4 +1,4 @@
-![Helios64 Button](img/button/helios64_button.jpg)
+![Button Location](img/button/button.jpg)
 
 !!! note
     All the above on-board buttons are also exposed on the [Front Panel](/helios64/front-panel).

docs/helios64/ethernet.md

@@ -1,4 +1,4 @@
-![Helios64 Ethernet](/helios64/img/ethernet/helios64_ethernet.jpg)
+![Ethernet Location](/helios64/img/ethernet/ethernet.jpg)
 
 Helios64 has 2x BASE-T Ethernet interfaces :
 
@@ -7,11 +7,11 @@ Helios64 has 2x BASE-T Ethernet interfaces :
 
 LAN 1 is the native Gigabit Ethernet interface from SoC RK3399. The interfaces is exposed through the Ethernet transceiver RTL8211F connected to RK3399 via RGMII.
 
-![Helios64 1GbE Diagram](/helios64/img/ethernet/helios64_1gbe_diagram.jpg)
+![Ethernet 1GbE Diagram](/helios64/img/ethernet/helios64_1gbe_diagram.jpg)
 
 LAN2 is the Multigigabit (2.5Gb) Ethernet interface provided through Realtek RTL8156 controller which is an USB3.0 to LAN bridge. The controller is connected to RK3399 via [VL815 USB 3.0 Hub](/helios64/usb/#usb-on-helios64).
 
-![Helios64 2.5GbE Diagram](/helios64/img/ethernet/helios64_2-5gbe_diagram.jpg)
+![Ethernet 2.5GbE Diagram](/helios64/img/ethernet/helios64_2-5gbe_diagram.jpg)
 
 ## Features
 

docs/helios64/front-panel.md

@@ -1,4 +1,4 @@
-Helios64 provides a 24-Pin header (P3) for an external front panel in order to expose system buttons and LEDs.
+Helios64 provides an external front panel interface via a 24-Pin header (P3) in order to expose system buttons and LEDs.
 
 ![P3 Location](/helios64/img/front-panel/fp_header.jpg)