tidy minor grammar needs

doc/Language/typesystem.pod6

@@ -377,7 +377,7 @@ X<|Type Capture (role)>L<Type captures|/type/Signature#Type_Captures> are suppor
 
 Versioning and authorship can be applied via adverbs C«:ver<>» and C«:auth<>».
 Both take a string as argument, for C<:ver> the string is converted to a
-L<Version|/type/Version> object. To query a roles version and author use
+L<Version|/type/Version> object. To query a role's version and author use
 C<.^ver> and C<^.auth>.
 
     role R:ver<4.2.3>:auth<me@here.local> {}
@@ -440,8 +440,8 @@ introspectiveness. The returned object is of type C<Map>.
     say one.WHAT; # OUTPUT«()␤»
     say $e.WHAT; # OUTPUT«(Map)␤»
 
-There are various methods to get hold of keys and values. All of them turn the
-values into C<Str>, what may not be desireable. By treating the enum as a
+There are various methods to get access to keys and values. All of them turn the
+values into C<Str>, which may not be desireable. By treating the enum as a
 package, we can get a list of type objects for the keys.
 
     enum E(<one two>); dd E::.values;