Fix up references to location that should be vhost

It looks like the comments were copied from nginx::resource::location.
This updates the comments to refer to vhosts where appropriate.

manifests/resource/vhost.pp

@@ -1,19 +1,19 @@
-# define: nginx::resource::location
+# define: nginx::resource::vhost
 #
-# This definition creates a new location entry within a virtual host
+# This definition creates a virtual host
 #
 # Parameters:
-#   [*ensure*]           - Enables or disables the specified location (present|absent)
+#   [*ensure*]           - Enables or disables the specified vhost (present|absent)
 #   [*listen_ip*]        - Default IP Address for NGINX to listen with this vHost on. Defaults to all interfaces (*)
 #   [*listen_port*]      - Default IP Port for NGINX to listen with this vHost on. Defaults to TCP 80
 #   [*ipv6_enable*]      - BOOL value to enable/disable IPv6 support (false|true). Module will check to see if IPv6
 #                          support exists on your system before enabling.
 #   [*ipv6_listen_ip*]   - Default IPv6 Address for NGINX to listen with this vHost on. Defaults to all interfaces (::)
 #   [*ipv6_listen_port*] - Default IPv6 Port for NGINX to listen with this vHost on. Defaults to TCP 80
-#   [*index_files*]      -  Default index files for NGINX to read when traversing a directory
-#   [*proxy*]            - Proxy server(s) for a location to connect to. Accepts a single value, can be used in conjunction
-#                          with nginx::resource::upstream
-#   [*ssl*]              - Indicates whether to setup SSL bindings for this location.
+#   [*index_files*]      - Default index files for NGINX to read when traversing a directory
+#   [*proxy*]            - Proxy server(s) for the root location to connect to.  Accepts a single value, can be used in
+#                          conjunction with nginx::resource::upstream
+#   [*ssl*]              - Indicates whether to setup SSL bindings for this vhost.
 #   [*ssl_cert*]         - Pre-generated SSL Certificate file to reference for SSL Support. This is not generated by this module.
 #   [*ssl_key*]          - Pre-generated SSL Key file to reference for SSL Support. This is not generated by this module.
 #   [*www_root*]         - Specifies the location on disk for files to be read from. Cannot be set in conjunction with $proxy