11628 typos detected by mandoc style

@@ -8,11 +8,11 @@
 
      int
      thrd_join(thrd_t thrd, int *res);
 
 DESCRIPTION
-     The thrd_join() function suspends the exection of the current thread and
+     The thrd_join() function suspends the execution of the current thread and
      waits for the thread indicated by thrd to terminate and stores the exit
      status, as set by a call to thrd_exit(3C), for that thread in res, if res
      is non-null.  The thrd argument must be a member of the current process
      and it cannot be detached.  If thrd has already terminated and another
      caller has not called thrd_join() then the exit status will be returned

@@ -24,11 +24,11 @@
      instead return with an error.
 
      For additional information on the thread joining interfaces supported by
      the system, see pthread_join(3C) and thr_join(3C).
 
-RETURN_VALUES
+RETURN VALUES
      Upon successful completion, the thrd_join() function returns thrd_success
      and if res is a non-null pointer, it will be filled in with the exit
      status of thrd.  If an error occurs, thrd_error will be returned.
 
 INTERFACE STABILITY

@@ -39,6 +39,6 @@
 
 SEE ALSO
      pthread_join(3C), thrd_create(3C), thrd_detach(3C), attributes(5),
      threads(5)
 
-illumos                        January 13, 2015                        illumos
+illumos                         August 27, 2019                        illumos