doc: typo fix: fix constrolled to controlled.

Signed-off-by: Yichun Zhang (agentzh) <agentzh@gmail.com>

Author: rainingmaster

README.markdown

@@ -7839,7 +7839,7 @@ timers" here mean timers that have not yet been expired and "running
 timers" are those whose user callbacks are currently running.
 
 The maximal number of pending timers allowed in an Nginx
-worker is constrolled by the [lua_max_pending_timers](#lua_max_pending_timers)
+worker is controlled by the [lua_max_pending_timers](#lua_max_pending_timers)
 directive. The maximal number of running timers is controlled by the
 [lua_max_running_timers](#lua_max_running_timers) directive.
 

doc/HttpLuaModule.wiki

@@ -6660,7 +6660,7 @@ timers" here mean timers that have not yet been expired and "running
 timers" are those whose user callbacks are currently running.
 
 The maximal number of pending timers allowed in an Nginx
-worker is constrolled by the [[#lua_max_pending_timers|lua_max_pending_timers]]
+worker is controlled by the [[#lua_max_pending_timers|lua_max_pending_timers]]
 directive. The maximal number of running timers is controlled by the
 [[#lua_max_running_timers|lua_max_running_timers]] directive.