added description header field

docs/conf/defining.md

@@ -1,6 +1,7 @@
 ---
 id: defining
 title: Defining Configuration for your Plugin
+description: Documentation on Defining Configuration for your Plugin
 ---
 
 There is currently no tooling support or helpers for defining plugin

docs/conf/index.md

@@ -1,6 +1,7 @@
 ---
 id: index
 title: Static Configuration in Backstage
+description: Documentation on Static Configuration in Backstage
 ---
 
 ## Summary

docs/conf/reading.md

@@ -1,6 +1,7 @@
 ---
 id: reading
 title: Reading Backstage Configuration
+description: Documentation on Reading Backstage Configuration
 ---
 
 ## Config API

docs/conf/writing.md

@@ -1,6 +1,7 @@
 ---
 id: writing
 title: Writing Backstage Configuration Files
+description: Documentation on Writing Backstage Configuration Files
 ---
 
 ## File Format