README: fix formatting

Author: kenyon

README.md

@@ -80,7 +80,9 @@ This could be really convenient when used with hiera:
 ```puppet
 include lvm
 ```
+
 and
+
 ```yaml
 ---
 lvm::volume_groups:
@@ -104,7 +106,9 @@ lvm::volume_groups:
         mountpath: /var/backups
         mountpath_require: true
 ```
+
 or to just build the VG if it does not exist
+
 ```yaml
 ---
 lvm::volume_groups:
@@ -142,13 +146,15 @@ If you need a more complex configuration, you'll need to build the
 resources out yourself.
 
 ## Optional Values
-  The `unless_vg` (physical_volume) and `createonly` (volume_group) will check
-  to see if "myvg" exists.  If "myvg" does exist then they will not modify
-  the physical volume or volume_group.  This is useful if your environment
-  is built with certain disks but they change while the server grows, shrinks
-  or moves.
 
-  Example:
+The `unless_vg` (physical_volume) and `createonly` (volume_group) will check
+to see if "myvg" exists.  If "myvg" does exist then they will not modify
+the physical volume or volume_group.  This is useful if your environment
+is built with certain disks but they change while the server grows, shrinks
+or moves.
+
+Example:
+
 ```puppet
     physical_volume { "/dev/hdc":
         ensure => present,
@@ -224,11 +230,9 @@ resources out yourself.
 
 ## AIX Specific Type Documentation
 
-
 There are a number of AIX specific parameters and properties. The regular
 parameters documented above also apply to AIX systems.
 
-
 ### filesystem
 
 * accounting (Parameter) - Specify accounting subsystem support, Allowed Values: