Update RST pin section

Updated RST pin section
Removed faulty image
Added width + height to tech spec

Author: karlsoderby

content/hardware/03.nano/carriers/nano-screw-terminal/tech-specs.yml

@@ -5,5 +5,5 @@ Features:
   Connectors: 2x Screw Terminals rows
   Proto Area: 9x8 holes
 Dimensions:
-  Width: XX mm
-  Length: XX mm
+  Width: 50.5 mm
+  Length: 70 mm

content/hardware/03.nano/carriers/nano-screw-terminal/tutorials/getting-started-nano-screw-terminal/assets/nst-rst-pin.png

@@ -63,9 +63,7 @@ As the pinout slightly differs from one Nano board to another, there are some im
 
 ### RST Pin
 
-![RST pin on the carrier.](assets/nst-rst-pin.png)
-
-The pin marked **"RST"** on the board stands for **"reset"**. On the Nano Screw Terminal, it is disconnected by default. The reason behind this is that the function of this pin varies from board to board. 
+The pin marked **"RST"** on the Nano Screw Terminal stands for **"reset"**. The function of this pin varies from board to board.
 
 An example of this is the [Nano RP2040 Connect](https://store.arduino.cc/nano-rp2040-connect), where this pin is named **"REC"** as in **"recovery"**.