Fix booleans where lowercase. (#50)

Author: microbit-robert

lang/en/typeshed/stdlib/log.pyi

@@ -92,7 +92,7 @@ def delete(full=False):
 def set_mirroring(serial: bool):
     """Mirrors the data logging activity to the serial output.
 
-    Example: ``log.set_mirroring(true)``
+    Example: ``log.set_mirroring(True)``
 
     Mirroring is disabled by default.
 

lang/en/typeshed/stdlib/time.pyi

@@ -127,6 +127,6 @@ def ticks_diff(ticks1: int, ticks2: int) -> int:
             task.run()
         elif ticks_diff(scheduled_time, now) < 0:
             print("Oops, running late, tell task to run faster!")
-            task.run(run_faster=true)
+            task.run(run_faster=True)
     """
     ...