Make changes to documentation to improve headings

Author: Amanda Westlake

content/en/docs/24.0/user-guides/configuration-basic/global-topo.md

@@ -38,11 +38,11 @@ To be safe, you may want to bring up etcd with `--enable-v2=true`, even though i
 
 It is generally not recommended that you migrate from one type of toposerver to another. However, if absolutely necessary, you can use the [topo2topo](../../../reference/features/topology-service/#migration-between-implementations) command line tool to perform this migration.
 
-## Backups
+## Backing up TopoServer data
 
 It is important to periodically backup the data in the TopoServer. Although most of the information in the TopoServer can be manually reconstructed, it is still a painful task. This can be avoided if a recent backup was readily available.
 
-## Checklist
+## Verifying TopoServer deployment
 
 * Ensure toposerver is up, and that you can set and get values using their provided client tools.
 * Ensure you have the mechanism to include the correct topo flags for all the components: `--topo-implementation`, `--topo-global-server-address` and `--topo-global-root`.

content/en/docs/24.0/user-guides/schema-changes/advanced-usage.md

@@ -10,7 +10,7 @@ Listed below are recipes for advanced online DDL usage:
 - [Duplicate migration indication](#duplicate-migration-indication)
 - [Near instant REVERTs](#near-instant-reverts)
 
-## Duplicate migration detection
+## Detecting duplicate migration
 
 Two migrations sharing the same context and DDL are considered duplicate, and only one will run to completion.
 

content/en/docs/24.0/user-guides/schema-changes/declarative-migrations.md

@@ -18,7 +18,7 @@ Altering tables in declarative DDL is done by issuing `CREATE TABLE` statements
 
 Declarative DDLs have the property of being idempotent. For example, a user may submit the same `CREATE TABLE` statement _twice_, one after another. If the 1st is successful, then the 2nd is a noop, and considered as implicitly successful. Likewise, two `DROP TABLE` DDLs for same statement will each ensure the table does not exist. If the 1st is successful, then the 2nd has nothing to do and is implicitly successful.
 
-## Usage
+## Using declarative migrations
 
 Add `--declarative` to any of the online DDL strategies. Example: