fix typo asser url [ci skip]

actionview/lib/action_view/helpers/asset_url_helper.rb

@@ -248,7 +248,7 @@ def javascript_path(source, options = {})
 
       # Computes the full URL to a JavaScript asset in the public javascripts directory.
       # This will use +javascript_path+ internally, so most of their behaviors will be the same.
-      # Since +javascript_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +javascript_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   javascript_url "js/xmlhr.js", host: "http://stage.example.com" # => http://stage.example.com/assets/dir/xmlhr.js
@@ -275,7 +275,7 @@ def stylesheet_path(source, options = {})
 
       # Computes the full URL to a stylesheet asset in the public stylesheets directory.
       # This will use +stylesheet_path+ internally, so most of their behaviors will be the same.
-      # Since +stylesheet_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +stylesheet_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   stylesheet_url "css/style.css", host: "http://stage.example.com" # => http://stage.example.com/css/style.css
@@ -305,7 +305,7 @@ def image_path(source, options = {})
 
       # Computes the full URL to an image asset.
       # This will use +image_path+ internally, so most of their behaviors will be the same.
-      # Since +image_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +image_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   image_url "edit.png", host: "http://stage.example.com" # => http://stage.example.com/edit.png
@@ -331,7 +331,7 @@ def video_path(source, options = {})
 
       # Computes the full URL to a video asset in the public videos directory.
       # This will use +video_path+ internally, so most of their behaviors will be the same.
-      # Since +video_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +video_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   video_url "hd.avi", host: "http://stage.example.com" # => http://stage.example.com/hd.avi
@@ -357,7 +357,7 @@ def audio_path(source, options = {})
 
       # Computes the full URL to an audio asset in the public audios directory.
       # This will use +audio_path+ internally, so most of their behaviors will be the same.
-      # Since +audio_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +audio_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   audio_url "horse.wav", host: "http://stage.example.com" # => http://stage.example.com/horse.wav
@@ -382,7 +382,7 @@ def font_path(source, options = {})
 
       # Computes the full URL to a font asset.
       # This will use +font_path+ internally, so most of their behaviors will be the same.
-      # Since +font_url+ is based on +asser_url+ method you can set :host options. If :host
+      # Since +font_url+ is based on +asset_url+ method you can set :host options. If :host
       # options is set, it overwrites global +config.action_controller.asset_host+ setting.
       #
       #   font_url "font.ttf", host: "http://stage.example.com" # => http://stage.example.com/font.ttf