Fixes fa-font-path value for netdna bootstrap CDN

Closes #2193

less/variables.less

@@ -2,7 +2,7 @@
 // --------------------------
 
 @fa-font-path:        "../fonts";
-//@fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.0.0/font"; // for referencing Bootstrap CDN font files directly
+//@fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.0.0/fonts"; // for referencing Bootstrap CDN font files directly
 @fa-css-prefix:       fa;
 @fa-version:          "4.0.0";
 @fa-border-color:     #eee;

scss/_variables.scss

@@ -2,7 +2,7 @@
 // --------------------------
 
 $fa-font-path:        "../fonts" !default;
-//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.0.0/font" !default; // for referencing Bootstrap CDN font files directly
+//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/4.0.0/fonts" !default; // for referencing Bootstrap CDN font files directly
 $fa-css-prefix:       fa;
 $fa-version:          "4.0.0" !default;
 $fa-border-color:     #eee !default;

src/assets/font-awesome/less/variables.less

@@ -4,7 +4,7 @@
 // --------------------------
 
 @fa-font-path:        "../fonts";
-//@fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/{{ site.fontawesome.version}}/font"; // for referencing Bootstrap CDN font files directly
+//@fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/{{site.fontawesome.version}}/fonts"; // for referencing Bootstrap CDN font files directly
 @fa-css-prefix:       {{ site.fontawesome.css_prefix }};
 @fa-version:          "{{ site.fontawesome.version }}";
 @fa-border-color:     #eee;

src/assets/font-awesome/scss/_variables.scss

@@ -4,7 +4,7 @@
 // --------------------------
 
 $fa-font-path:        "../fonts" !default;
-//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/{{ site.fontawesome.version}}/font" !default; // for referencing Bootstrap CDN font files directly
+//$fa-font-path:        "//netdna.bootstrapcdn.com/font-awesome/{{site.fontawesome.version}}/fonts" !default; // for referencing Bootstrap CDN font files directly
 $fa-css-prefix:       {{ site.fontawesome.css_prefix }};
 $fa-version:          "{{ site.fontawesome.version }}" !default;
 $fa-border-color:     #eee !default;