decapitalized the link to tune the pid controller

Author: ProfessorAtomicManiac

docs/section-7/feedback-control.md

@@ -81,7 +81,7 @@ In general, the "optimal" PID controller gets the error to zero as fast as possi
 
 To get those ideal constants... you kind of just guess and check. WPILIB provides a nice simulation of how it is like to tune these constants.
 
-[Click here to try tuning a PID Controller. SCROLL TO "PURE FEEDBACK CONTROL", SKIP EVERYTHING ELSE](https://docs.wpilib.org/en/stable/docs/software/advanced-controls/introduction/tuning-flywheel.html)
+[Click here to try tuning a PID Controller. Scroll to "Pure Feedback Control, skip everything else](https://docs.wpilib.org/en/stable/docs/software/advanced-controls/introduction/tuning-flywheel.html)
 
 Follow the instructions and see if you can get the optimal tuning solution. The model simulates a flywheel shooter mechanism and halfway through the simulation it shoots a ball. **DO NOT SKIP THIS PRACTICE**