[move][docs] Add section on pattern matching to Move book

external-crates/move/documentation/book/src/SUMMARY.md

@@ -22,8 +22,10 @@
   - [Conditional Expressions](control-flow/conditionals.md)
   - [Loops](control-flow/loops.md)
   - [Labeled Control FLow](control-flow/labeled-control-flow.md)
+  - [Patterm Matching](control-flow/pattern-matching.md)
 - [Functions](functions.md)
 - [Structs](structs.md)
+- [Enums](enums.md)
 - [Constants](constants.md)
 - [Generics](generics.md)
 - [Type Abilities](abilities.md)

external-crates/move/documentation/book/src/control-flow.md

@@ -3,8 +3,10 @@
 Move offers multiple constructs for control flow based on
 [boolean expressions](./primitive-types/bool.md), including common programming constructs such as
 `if` expressions and `while` and `for` loops, along with advanced control flow structures including
-labels for loops and escapable named blocks.
+labels for loops and escapable named blocks. It also supports more more complex constructs based on
+structural pattern matching.
 
 - [Conditional Expressions](./control-flow/conditionals.md)
 - [Loops](./control-flow/loops.md)
 - [Labeled Control FLow](./control-flow/labeled-control-flow.md)
+- [Pattern Matching](./control-flow/pattern-matching.md)