Doc fixes for readability (formatting/punctuation) (#61086)

Variable-width font was extremely difficult to read in a couple places.
Fixed missing close-quote, colon, spelling, etc.

docs/docsite/rst/user_guide/intro_patterns.rst

@@ -52,16 +52,16 @@ You can do combinations::
 
     webservers:dbservers:&staging:!phoenix
 
-The above configuration means "all machines in the groups 'webservers' and 'dbservers' are to be managed if they are in
-the group 'staging' also, but the machines are not to be managed if they are in the group 'phoenix' ... whew!
+The above configuration means "all machines in the groups 'webservers' and 'dbservers' are to be managed if they are also in
+the group 'staging', but the machines are not to be managed if they are in the group 'phoenix'." Whew!
 
-You can also use variables if you want to pass some group specifiers via the "-e" argument to ansible-playbook, but this
+You can also use variables if you want to pass some group specifiers via the ``-e`` argument to ansible-playbook, but this
 is uncommonly used::
 
     webservers:!{{excluded}}:&{{required}}
 
-You also don't have to manage by strictly defined groups.  Individual host names, IPs and groups, can also be referenced using
-wildcards
+You also don't have to manage by strictly defined groups.  Individual host names, IPs, and groups can also be referenced using
+wildcards:
 
 .. code-block:: none
 
@@ -88,7 +88,7 @@ You can refer to hosts within the group by adding a subscript to the group name:
     webservers[1:]      # == webbing,weber
     webservers[:3]      # == cobweb,webbing,weber
 
-Most people don't specify patterns as regular expressions, but you can.  Just start the pattern with a '~'::
+Most people don't specify patterns as regular expressions, but you can.  Just start the pattern with a ``~``::
 
     ~(web|db).*\.example\.com
 
@@ -96,13 +96,13 @@ While we're jumping a bit ahead, additionally, you can add an exclusion criteria
 
     ansible-playbook site.yml --limit datacenter2
 
-And if you want to read the list of hosts from a file, prefix the file name with '@'.::
+And if you want to read the list of hosts from a file, prefix the file name with ``@``::
 
     ansible-playbook site.yml --limit @retry_hosts.txt
 
 Easy enough.  See :ref:`intro_adhoc` and then :ref:`playbooks_intro` for how to apply this knowledge.
 
-.. note:: You can use ',' instead of ':' as a host list separator. The ',' is preferred specially when dealing with ranges and ipv6.
+.. note:: You can use a comma (``,``) as a host list separator instead of a colon (``:``). The comma is preferred when dealing with ranges and IPv6 addresses.
 
 .. seealso::