[S06] typo fixes

Author: Carl Masak

S06-routines.pod

@@ -642,7 +642,7 @@ is the actual value that will be bound to the formal parameter.
 The process of attaching these values (arguments) to their temporary
 names (parameters) is known as I<binding>.  (Some C.S. literature
 uses the terms "formal argument" and "actual argument" for these
-two conepts, but here we try to avoid using the term "argument"
+two concepts, but here we try to avoid using the term "argument"
 for formal parameters.)
 
 Various Perl 6 code objects (either routines or blocks) may be
@@ -668,7 +668,7 @@ may always call C<fail> to return a C<Failure> object regardless of
 the return specification.
 
 Ordinarily, if the return is specified as a type (or is unspecified),
-the final statement of the block will be evaluated for its the return
+the final statement of the block will be evaluated for its return
 value, and this will be the return value of the code block as a whole.
 (It must conform to the return type specification, if provided.)
 An explicit C<return> may be used instead to evaluate the C<return>'s