Fix typos.

@@ -3573,9 +3573,9 @@ invocation in @option{--attach-fd} options.
 
 The descriptors will be held in @samp{@@fds} array.  This will prevent
 them from being wiped out by the garbage collector.  Furthermore, care
-should be taken to ensure that the @code{O_CLOECEC} flag be not set
+should be taken to ensure that the @code{O_CLOEXEC} flag be not set
 for these descriptors.  This sample script takes a simplistic approach:
-it instructs Perl to not close first 255 descriptors when executing
+it instructs Perl not to close first 255 descriptors when executing
 another programs:
 
 @example