Fix losenge to elongated

The geometric form of a lozenge appears to be a diamond. The edible lozenge appears in many forms (though my mind went right to Lockets!). "Elongated" seems to be less subject to interpretation, since the more geometrically correct "stadium" is a relatively obscure term.

Author: Gadgetoid

hardware/powersupply.md

@@ -15,9 +15,9 @@ lang: en
 Power to the micro:bit may be provided via:
 
 - USB connection via the interface chip (which has an on-board regulator)
-- A battery plugged into the JST connector. 
-- The 3V and GND pins on the Edge Connector
-- The two losenge shaped pads on the rear right of the board
+- A battery plugged into the JST connector
+- The 3V and GND pins on the edge connector
+- The two elongated pads on the rear right of the board
 
 Power from the micro:bit can be provided by the 3V and GND pins to small external circuits.
 
@@ -147,4 +147,4 @@ The BAT60A devices have a low Vf rating, you can read about this in the
 [BAT60A datasheet](http://www.infineon.com/dgdl/Infineon-BAT60ASERIES-DS-v01_01-en.pdf?fileId=db3a304313d846880113def70c9304a9)
 
 ### Power Supply Architecture V2 TBC
-<!-- TODO -->
+<!-- TODO -->