Typo in Docs [skip ci]

extensions/bootstrap/README.md

@@ -14,7 +14,7 @@ single line of code in a view file would render a Bootstrap Progress plugin:
 Installation
 ------------
 
-The preferred way to install this extension is [composer](http://getcomposer.org/download/).
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
 Either run
 

extensions/debug/README.md

@@ -9,7 +9,7 @@ a set of standalone pages to display more detailed debug information.
 Installation
 ------------
 
-The preferred way to install this extension is [composer](http://getcomposer.org/download/).
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
 Either run
 

extensions/gii/README.md

@@ -8,7 +8,7 @@ You can use Gii to quickly generate models, forms, modules, CRUD, etc.
 Installation
 ------------
 
-The preferred way to install this extension is [composer](http://getcomposer.org/download/).
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
 Either run
 

extensions/jui/README.md

@@ -13,7 +13,7 @@ single line of code in a view file would render a JQuery UI DatePicker widget:
 Installation
 ------------
 
-The preferred way to install this extension is [composer](http://getcomposer.org/download/).
+The preferred way to install this extension is through [composer](http://getcomposer.org/download/).
 
 Either run