Update links for repositories moved from apple to swiftlang (#1048)

Author: TTOzzi

CMakeLists.txt

@@ -50,7 +50,7 @@ endif()
 find_package(cmark-gfm CONFIG)
 if(NOT cmark-gfm_FOUND)
   FetchContent_Declare(cmark-gfm
-    GIT_REPOSITORY https://github.com/apple/swift-cmark
+    GIT_REPOSITORY https://github.com/swiftlang/swift-cmark
     GIT_TAG gfm)
   list(APPEND _SF_VENDOR_DEPENDENCIES cmark-gfm)
 endif()
@@ -60,7 +60,7 @@ if(NOT SwiftMarkdown_FOUND)
   # TODO(compnerd) we need a latest version for now as we need the CMake support
   # which is untagged.
   FetchContent_Declare(Markdown
-    GIT_REPOSITORY https://github.com/apple/swift-markdown
+    GIT_REPOSITORY https://github.com/swiftlang/swift-markdown
     GIT_TAG main)
   list(APPEND _SF_VENDOR_DEPENDENCIES Markdown)
 endif()

Package.swift

@@ -197,7 +197,7 @@ var dependencies: [Package.Dependency] {
   } else {
     return [
       .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.2"),
-      .package(url: "https://github.com/apple/swift-markdown.git", from: "0.2.0"),
+      .package(url: "https://github.com/swiftlang/swift-markdown.git", from: "0.2.0"),
       .package(url: "https://github.com/swiftlang/swift-syntax.git", branch: "main"),
     ]
   }