Edited ch01_intro.adoc with Atlas code editor

ch01_intro.adoc

@@ -211,7 +211,7 @@ partially validates the transactions it receives, and independently
 creates outgoing transactions.
 
 Third-party API client:: A third-party
-API client is one that interacts with Bitcoin through a third-party
+API client ((("third-party API clients")))is one that interacts with Bitcoin through a third-party
 system of APIs, rather than by
 connecting to the Bitcoin network directly. The wallet may be stored by
 the user or by third-party servers, but the client trusts the remote
@@ -219,7 +219,7 @@ server to provide it with accurate information and protect its ((("wallets", "ty
 
 [TIP]
 ====
-Bitcoin is a peer-to-peer (P2P) network.  Full nodes are the _peers:_
+Bitcoin ((("Bitcoin", "as peer-to-peer network", secondary-sortas="peer-to-peer network")))((("peer-to-peer networks", "Bitcoin as")))((("peers")))((("clients")))is a peer-to-peer (P2P) network.  Full nodes are the _peers:_
 each peer individually validates every confirmed transaction and can
 provide data to its user with complete authority.  Lightweight wallets
 and other software are _clients:_ each client depends on one or more peers