Replaced internal .html links with .md extension

Find: (\([^:\)]+\.)html\)

Replace: $1md\)

Author: breandan

basics.md

@@ -5,12 +5,12 @@ title: Quick Start Guide
 This section covers the basics of working with *IntelliJ Platform*.
 It will familiarize you with the working environment, project structure, and frequently used API components.
 
-* [Main Types of IntelliJ IDEA Plugins](basics/types_of_plugins.html)
-* [Getting Started](basics/getting_started.html)
-* [Architectural Overview](basics/architectural_overview.html)
-* [Project Structure](basics/project_structure.html)
-* [Check Out And Build Community Edition](basics/checkout_and_build_community.html)
-* [IDE Settings, Caches, Logs, and Plugins](basics/settings_caches_logs.html)
-* [Indexing and PSI Stubs](basics/indexing_and_psi_stubs.html)
-* [Run Configurations](basics/run_configurations.html)
-* [Testing Plugins](basics/testing_plugins.html)
+* [Main Types of IntelliJ IDEA Plugins](basics/types_of_plugins.md)
+* [Getting Started](basics/getting_started.md)
+* [Architectural Overview](basics/architectural_overview.md)
+* [Project Structure](basics/project_structure.md)
+* [Check Out And Build Community Edition](basics/checkout_and_build_community.md)
+* [IDE Settings, Caches, Logs, and Plugins](basics/settings_caches_logs.md)
+* [Indexing and PSI Stubs](basics/indexing_and_psi_stubs.md)
+* [Run Configurations](basics/run_configurations.md)
+* [Testing Plugins](basics/testing_plugins.md)

basics/action_system.md

@@ -147,7 +147,7 @@ public class MyPluginRegistration implements ApplicationComponent {
 ```
 
 Note, that the sample ```TextBoxes``` class is described in
-[Getting Started with Plugin Development](/basics/getting_started.html).
+[Getting Started with Plugin Development](/basics/getting_started.md).
 
 To ensure that your plugin is initialized on IDEA start-up, make the following changes to the `<application-components>` section of the plugin.xml file: