docs: sync Polymarket docs - 2026-04-14

docs/api-reference/relayer/get-a-transaction-by-id.md

@@ -1,7 +1,14 @@
+> ## Documentation Index
+> Fetch the complete documentation index at: https://docs.polymarket.com/llms.txt
+> Use this file to discover all available pages before exploring further.
+
 # Get a transaction by ID
 
 > Gets a transaction submitted to the Relayer. Takes in a required transaction ID as a query parameter.
 
+
+
+
 ## OpenAPI
 
 ````yaml /api-spec/relayer-openapi.yaml get /transaction
@@ -25,12 +32,14 @@ tags:
       However, Relayer API keys can only be created using Gamma auth. Every
       address can create a maximum of 100 keys.
 
+
       The API key auth headers are:
 
       - `RELAYER_API_KEY`
 
       - `RELAYER_API_KEY_ADDRESS`
 
+
       `RELAYER_API_KEY_ADDRESS` must match the address that owns the key.
 paths:
   /transaction:
@@ -189,6 +198,4 @@ components:
       pattern: ^0x[a-fA-F0-9]{40}$
       example: '0x6e0c80c90ea6c15917308F820Eac91Ce2724B5b5'
 
-````
-
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+````