Added details about slide switch + corrected typo

public/instructions.html

@@ -41,7 +41,8 @@ If you only bought the board, or you had it printed yourself, you will need to g
   Alternatively, get a cable w/plug from a broken and non-salvageable Atari/Commodore joystick, or even from
   a new reproduction Amiga/Atari joystick.</li>
 
-<li><b>2-position right angle slide switch</b>, 5 pins, 3 mm pin pitch. These should come cheaply
+<li><b>2-position right angle slide switch</b>, SPDT On-On, 3 pins (or 5 pins with two shielding pins),
+  2 mm pin pitch, min 5 mm knob height. These should come cheaply
   from your local electronics store or even from EBay.</li>
 
 <li>Basic <b>soldering skills</b> and tools/equipment. These do not come with the kit! ☺</li>
@@ -130,6 +131,8 @@ are required, as well as some equipment such as a soldering iron, wire strippers
 
 <p>Good luck with your new NES controller for your Commodore / Atari retro computer (or compatible)!</p>
 
+<p><i>nes64.pryds.eu</i></p>
+
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