Provides release notes entries for new APIs

Provides release notes entries for:

- `ClosureCaptureSyntax.init` swiftlang#2127
- `EnumCaseParameterSyntax.init`
  swiftlang#2112

Co-authored-by: Mateusz Bąk <bakmatthew@icloud.com>

Release Notes/510.md

@@ -3,11 +3,19 @@
 ## New APIs
 
 - `SyntaxStringInterpolation.appendInterpolation(_: (some SyntaxProtocol)?)`
-  - Descriptions: Allows optional syntax nodes to be used inside string interpolation of syntax nodes. If the node is `nil`, nothing will get added to the string interpolation.
+  - Description: Allows optional syntax nodes to be used inside string interpolation of syntax nodes. If the node is `nil`, nothing will get added to the string interpolation.
   - Pull Request: https://github.com/apple/swift-syntax/pull/2085
 - `SyntaxCollection.index(at:)`
   - Description: Returns the index of the n-th element in a `SyntaxCollection`. This computation is in O(n) and `SyntaxCollection` is not subscriptable by an integer.
+  - Issue: https://github.com/apple/swift-syntax/issues/1984
   - Pull Request: https://github.com/apple/swift-syntax/pull/2014
+- Convenience initializer `ClosureCaptureSyntax.init()`
+  - Description: Provides a convenience initializer for `ClosureCaptureSyntax` that takes a concrete `name` argument and automatically adds `equal = TokenSyntax.equalToken()` to it.
+  - Pull Request: https://github.com/apple/swift-syntax/pull/2127
+- Convenience initializer `EnumCaseParameterSyntax.init()`
+  - Description: Provides a convenience initializer for `EnumCaseParameterSyntax` that takes a concrete `firstName` value and adds `colon = TokenSyntax.colonToken()` automatically to it.
+  - Issue: https://github.com/apple/swift-syntax/issues/1984
+  - Pull Request: https://github.com/apple/swift-syntax/pull/2112
 
 ## API Behavior Changes
 

Sources/SwiftSyntax/Convenience.swift

@@ -12,7 +12,7 @@
 
 extension ClosureCaptureSyntax {
 
-  /// Creates a `ClosureCaptureSyntax` with a `name`, and automatically adds an `equal` token to it since the name is non-optional.
+  /// Creates a ``ClosureCaptureSyntax`` with a `name`, and automatically adds an `equal` token to it since the name is non-optional.
   ///
   /// - SeeAlso: ``ClosureCaptureSyntax/init(leadingTrivia:_:specifier:_:name:_:equal:_:expression:_:trailingComma:_:trailingTrivia:)``.
   ///
@@ -39,7 +39,7 @@ extension ClosureCaptureSyntax {
 
 extension EnumCaseParameterSyntax {
 
-  /// Creates an `EnumCaseParameterSyntax` with a `firstName`, and automatically adds a `colon` to it.
+  /// Creates an ``EnumCaseParameterSyntax`` with a `firstName`, and automatically adds a `colon` to it.
   ///
   ///  - SeeAlso: For more information on the arguments, see ``EnumCaseParameterSyntax/init(leadingTrivia:_:modifiers:_:firstName:_:secondName:_:colon:_:type:_:defaultArgument:_:trailingComma:_:trailingTrivia:)``
   ///