Merge pull request #2093 from ahoppen/ahoppen/any-visitor-doc-comment

Convert code in doc comment on `SyntaxAnyVisitor` to docc style

Author: ahoppen

CodeGeneration/Sources/generate-swiftsyntax/templates/swiftsyntax/SyntaxAnyVisitorFile.swift

@@ -29,16 +29,19 @@ let syntaxAnyVisitorFile = SourceFileSyntax(leadingTrivia: copyrightHeader) {
     /// function, should also call `visitAny(_)` in its implementation, if calling
     /// `visitAny` is needed:
     ///
-    ///     struct MyVisitor: SyntaxAnyVisitor {
-    ///       func visitAny(_ node: Syntax) -> SyntaxVisitorContinueKind {
-    ///         <code>
-    ///       }
+    /// ```swift
+    /// struct MyVisitor: SyntaxAnyVisitor {
+    ///   func visitAny(_ node: Syntax) -> SyntaxVisitorContinueKind {
+    ///     <code>
+    ///   }
     ///
-    ///       func visit(_ token: TokenSyntax) -> SyntaxVisitorContinueKind {
-    ///         <code>
-    ///         // Call this to pass tokens to `visitAny(_)` as well if needed
-    ///         visitAny(token)
-    ///       }
+    ///   func visit(_ token: TokenSyntax) -> SyntaxVisitorContinueKind {
+    ///     <code>
+    ///     // Call this to pass tokens to `visitAny(_)` as well if needed
+    ///     visitAny(token)
+    ///   }
+    /// }
+    /// ```
     open class SyntaxAnyVisitor: SyntaxVisitor
     """
   ) {

Sources/SwiftSyntax/generated/SyntaxAnyVisitor.swift

@@ -23,16 +23,19 @@
 /// function, should also call `visitAny(_)` in its implementation, if calling
 /// `visitAny` is needed:
 ///
-///     struct MyVisitor: SyntaxAnyVisitor {
-///       func visitAny(_ node: Syntax) -> SyntaxVisitorContinueKind {
-///         <code>
-///       }
+/// ```swift
+/// struct MyVisitor: SyntaxAnyVisitor {
+///   func visitAny(_ node: Syntax) -> SyntaxVisitorContinueKind {
+///     <code>
+///   }
 ///
-///       func visit(_ token: TokenSyntax) -> SyntaxVisitorContinueKind {
-///         <code>
-///         // Call this to pass tokens to `visitAny(_)` as well if needed
-///         visitAny(token)
-///       }
+///   func visit(_ token: TokenSyntax) -> SyntaxVisitorContinueKind {
+///     <code>
+///     // Call this to pass tokens to `visitAny(_)` as well if needed
+///     visitAny(token)
+///   }
+/// }
+/// ```
 open class SyntaxAnyVisitor: SyntaxVisitor {
   open func visitAny(_ node: Syntax) -> SyntaxVisitorContinueKind {
     return .visitChildren