Update rtic_bare6.rs

examples/rtic_bare6.rs

@@ -264,7 +264,7 @@ fn clock_out(rcc: &RCC, gpioc: &GPIOC) {
 //
 //    What is the peak to peak (voltage) reading of the signal?
 //
-//      5.4 - 5.6 V or 4.7 - 4.8 V
+//      4.8 V
 //
 //    Make a folder called "pictures" in your git project.
 //    Make a screen dump or photo of the oscilloscope output.