Update links to External Libraries tutorial, now at FTC wiki

Custom-FTC-Blocks-(myBlocks).md

@@ -437,7 +437,7 @@ MyBlocks offer great potential for creativity and robot capability.  Start by pr
 
 - Create driving actions with **multiple sensor controls**.  For example, gyro-based steering towards a distance goal (ultrasonic or vision target).  Or Run_To_Position while following a line.  A myBlock can provide Blocks users with controls previously considered too complex.
 
-- Provide access to **External Libraries**, new for FTC SDK 7.0.  More info is [here](https://github.com/WestsideRobotics/FTC-Libraries/wiki).
+- Provide access to **External Libraries**, new for FTC SDK 7.0.  More info is [here](External-Libraries-in-OnBot-Java-and-Blocks#introduction).
 
 - One of the above examples controls a servo specified by the Blocks user.  This could lead to a **family of separate myBlocks** to interact with 1 device, 2 devices, etc.  Or a generic single myBlock could interact with, say, up to 4 DC motors.  The Java method would process only those DC motors with a filled-in parameter name.
 
@@ -459,7 +459,7 @@ Here are some tips for efficiency, from the developer Liz Looney:
 
 # Summary: Benefits of myBlocks
 
-1. MyBlocks now provide access to the full range of Java in the FTC Software Development Kit (SDK).  Blocks programming can now perform tasks **previously unavailable** to Blocks-only teams.  This now includes [External Libraries](https://github.com/WestsideRobotics/FTC-Libraries/wiki).
+1. MyBlocks now provide access to the full range of Java in the FTC Software Development Kit (SDK).  Blocks programming can now perform tasks **previously unavailable** to Blocks-only teams.  This now includes [External Libraries](External-Libraries-in-OnBot-Java-and-Blocks#introduction).
 
 2. MyBlocks can neatly package previously **long or complex Functions** in FTC Blocks.