How-To Guide Dropdowns (#2279)

* How-To Guide Dropdowns

Addresses: #2210

* remove _category_.json

Author: briwylde08

docs/build/guides/archival/README.mdx

@@ -1,7 +1,6 @@
 ---
 title: State Archival
 hide_table_of_contents: true
-sidebar_class_name: sidebar-category-items-hidden
 sidebar_position: 77
 ---
 

docs/build/guides/archival/_category_.json

@@ -1,7 +1,6 @@
 ---
 title: Contract Authorization
 hide_table_of_contents: true
-sidebar_class_name: sidebar-category-items-hidden
 sidebar_position: 1
 ---
 

docs/build/guides/auth/README.mdx

@@ -1,7 +1,6 @@
 ---
 title: Stellar Basics
 hide_table_of_contents: true
-sidebar_class_name: sidebar-category-items-hidden
 sidebar_position: 80
 ---
 

docs/build/guides/auth/_category_.json

@@ -1,7 +1,6 @@
 ---
 title: Contract Accounts
 hide_table_of_contents: true
-sidebar_class_name: sidebar-category-items-hidden
 sidebar_position: 5
 description: Build, evaluate, and extend contract accounts on Stellar.
 ---

docs/build/guides/basics/README.mdx

@@ -1,7 +1,6 @@
 ---
 title: Contract Conventions
 hide_table_of_contents: true
-sidebar_class_name: sidebar-category-items-hidden
 sidebar_position: 10
 ---