Merge branch 'master' into api-v2

docs/references/http-websocket-apis/public-api-methods/ledger-methods/ledger_entry.md

@@ -158,7 +158,7 @@ rippled json ledger_entry '{ "account_root": "r9cZA1mLK5R5Am25ArfXFmqgNwjZgnfk59
 
 ### Get AMM Object
 
-_(Requires the [AMM amendment][])_
+_(Added by the [AMM amendment][])_
 
 Retrieve an Automated Market-Maker (AMM) object from the ledger. This is similar to [amm_info method][], but the `ledger_entry` version returns only the ledger entry as stored.
 
@@ -404,7 +404,7 @@ rippled json ledger_entry '{ "offer": { "account": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJY
 
 ### Get Oracle Object
 
-_(Requires the [PriceOracle amendment][] {% not-enabled /%})_
+_(Requires the [PriceOracle amendment][])_
 
 Retrieve an [Oracle entry](../../../protocol/ledger-data/ledger-entry-types/oracle.md), which represents a single price oracle that can store token prices.
 

docs/references/http-websocket-apis/public-api-methods/path-and-order-book-methods/book_changes.md

@@ -1,6 +1,6 @@
 ---
 seo:
-    description: Get information on 
+    description: Get information on order book changes
 labels:
   - Decentralized Exchange
   - Cross-Currency
@@ -20,7 +20,7 @@ An example of the request format:
 ```json
 {
     "id": "example_book_changes",
-    "command": "book_changes",
+    "command": "{% $frontmatter.seo.title %}",
     "ledger_index": 88530953
 }
 ```

docs/references/http-websocket-apis/public-api-methods/path-and-order-book-methods/get_aggregate_price.md

@@ -2,13 +2,12 @@
 html: get_aggregate_price.html
 parent: ledger-methods.html
 blurb: Calculates the aggregate price of specified Oracle instances.
-status: not_enabled
 labels:
   - Oracle
 ---
 # get_aggregate_price
 
-_(Requires the [PriceOracle amendment][] {% not-enabled /%})_
+_(Requires the [PriceOracle amendment][])_
 
 [[Source]](https://github.com/XRPLF/rippled/blob/master/src/ripple/rpc/handlers/GetAggregatePrice.cpp "Source")
 

docs/references/http-websocket-apis/public-api-methods/server-info-methods/version.md

@@ -74,8 +74,6 @@ An example of a successful response:
 ```json
 200 OK
 
-Headers
-
 {
   "result": {
     "version": {