Fixes last word variants, closes #3024

Also false positives have been taken care of or circumvented. Closes #2966

Author: JJ

doc/Language/typesystem.pod6

@@ -173,7 +173,7 @@ that is mixed in.
 
 =head4 Metaclass
 
-To test if a given type object is a class, test the meta object method C<.HOW>
+To test if a given type object is a class, test the metaobject method C<.HOW>
 against L<Metamodel::ClassHOW|/type/Metamodel::ClassHOW>.
 
     class C {};

doc/Type/Mu.pod6

@@ -365,7 +365,7 @@ say $p.perl;
 
 In this code, C<bless>, called within C<Point.new>, is eventually calling
 C<BUILD> with the same parameters. We have to create a convoluted way of using
-the C<$.ID> attribute using the meta-object protocol so that we can instantiate
+the C<$.ID> attribute using the metaobject protocol so that we can instantiate
 it and thus serve that C<new> constructor, which can be called on
 C<Point-with-ID> since it is a subclass.
 

doc/Type/independent-routines.pod6

@@ -550,12 +550,11 @@ multi sub shell($cmd, :$in = '-', :$out = '-', :$err = '-',
                 Str :$enc, Str:D :$nl = "\n", :$cwd = $*CWD, :$env)
 =end code
 
-Runs a command through the system shell, which defaults to
-C<%*ENV<ComSpec> /c> in Windows, C</bin/sh -c> otherwise. All shell meta
-characters are interpreted by the shell, including pipes, redirects,
-environment variable substitutions and so on. Shell escapes are a severe
-security concern and can cause confusion with unusual file names. Use
-L<run|/type/Proc#sub_run> if you want to be safe.
+Runs a command through the system shell, which defaults to C<%*ENV<ComSpec> /c>
+in Windows, C</bin/sh -c> otherwise. All shell metacharacters are interpreted by
+the shell, including pipes, redirects, environment variable substitutions and so
+on. Shell escapes are a severe security concern and can cause confusion with
+unusual file names. Use L<run|/type/Proc#sub_run> if you want to be safe.
 
 The return value is of L<type Proc|/type/Proc>.