fix: suggestions from the code review

docs/src/content/docs/book/compile.mdx

@@ -10,7 +10,7 @@ import { Badge } from '@astrojs/starlight/components';
 
 :::note
 
-  This page is still being written as per [#1136](https://github.com/tact-lang/tact-docs/issues/1136).
+  This page is still being written as per [#1136](https://github.com/tact-lang/tact/issues/1136).
 
 :::
 
@@ -56,6 +56,18 @@ Signature: `StdAddress{workchain:int8,address:uint256}`
 ...etc.
 ```
 
+[TL-B schema][tlb] of each [Message][message] contains its opcode, which is handy for looking up the auto-generated opcodes as well as confirming the [manually provided ones](/book/structs-and-messages#message-opcodes). For example:
+
+```md
+## Deploy
+TL-B: `deploy#946a98b6 queryId:uint64 = Deploy`
+Signature: `Deploy{queryId:uint64}`
+
+## Seven
+TL-B: `seven#00000007 = Seven`
+Signature: `Seven{}`
+```
+
 #### Get methods {#getters}
 
 This section specifies the number of available get methods or [getter functions](/book/functions#getter-functions) and outlines them with their argument names, if any.