Update references to projects that have been moved to the swiftlang GitHub organization (#1150)

Author: ahoppen

Package.resolved

@@ -57,7 +57,7 @@
     {
       "identity" : "swift-docc-plugin",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-docc-plugin.git",
+      "location" : "https://github.com/swiftlang/swift-docc-plugin.git",
       "state" : {
         "revision" : "26ac5758409154cc448d7ab82389c520fa8a8247",
         "version" : "1.3.0"
@@ -66,7 +66,7 @@
     {
       "identity" : "swift-docc-symbolkit",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-docc-symbolkit.git",
+      "location" : "https://github.com/swiftlang/swift-docc-symbolkit.git",
       "state" : {
         "branch" : "main",
         "revision" : "96bce1cfad4f4d7e265c1eb46729ebf8a7695f4b"
@@ -75,7 +75,7 @@
     {
       "identity" : "swift-lmdb",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-lmdb.git",
+      "location" : "https://github.com/swiftlang/swift-lmdb.git",
       "state" : {
         "branch" : "main",
         "revision" : "c42582487fe84f72a4d417dd2d8493757bd4d072"
@@ -84,7 +84,7 @@
     {
       "identity" : "swift-markdown",
       "kind" : "remoteSourceControl",
-      "location" : "https://github.com/apple/swift-markdown.git",
+      "location" : "https://github.com/swiftlang/swift-markdown.git",
       "state" : {
         "branch" : "main",
         "revision" : "d21714073e0d16ba78eebdf36724863afc36871d"

Package.swift

@@ -130,12 +130,12 @@ if ProcessInfo.processInfo.environment["SWIFTCI_USE_LOCAL_DEPS"] == nil {
     // Building standalone, so fetch all dependencies remotely.
     package.dependencies += [
         .package(url: "https://github.com/apple/swift-nio.git", from: "2.53.0"),
-        .package(url: "https://github.com/apple/swift-markdown.git", branch: "main"),
-        .package(url: "https://github.com/apple/swift-lmdb.git", branch: "main"),
+        .package(url: "https://github.com/swiftlang/swift-markdown.git", branch: "main"),
+        .package(url: "https://github.com/swiftlang/swift-lmdb.git", branch: "main"),
         .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.2.2"),
-        .package(url: "https://github.com/apple/swift-docc-symbolkit.git", branch: "main"),
+        .package(url: "https://github.com/swiftlang/swift-docc-symbolkit.git", branch: "main"),
         .package(url: "https://github.com/apple/swift-crypto.git", from: "3.0.0"),
-        .package(url: "https://github.com/apple/swift-docc-plugin.git", from: "1.2.0"),
+        .package(url: "https://github.com/swiftlang/swift-docc-plugin.git", from: "1.2.0"),
     ]
 } else {
     // Building in the Swift.org CI system, so rely on local versions of dependencies.