typo

Author: jonathanstowe

lib/Language/concurrency.pod

@@ -110,7 +110,7 @@ A library may wish to provide an alternative scheduler implementation if
 it has special requirements, for instance a UI library may want all code
 to be run within a single UI thread, or some custom priority mechanism
 may be required, however the implementations provided as standard and
-escribed below should suffice for most user code.
+described below should suffice for most user code.
 
 =head3 ThreadPoolScheduler