Fixed wrong programming language name (#264)

Signed-off-by: Scott Rushworth <openhab@5iver.com>

Author: konuch

Sphinx/Getting Started/File Locations.rst

@@ -44,7 +44,7 @@ Example Directory Structure
                 │   ├── core
                 │   ├── personal
                 │   └── configuration.groovy
-                ├── groovy
+                ├── javascript
                 │   ├── community
                 │   ├── core
                 │   ├── personal