fix: name the package cobs_codec, not the repo slug

The _swift suffix is only the repo slug; the SPM package name is cobs_codec.

Author: ajsb85

Package.swift

@@ -1,6 +1,7 @@
 // swift-tools-version: 6.0
 //
-// Package manifest for `cobs_codec_swift`, a pure-Swift COBS / COBS-R codec.
+// Package manifest for the `cobs_codec` package (repository `cobs_codec_swift`),
+// a pure-Swift COBS / COBS-R codec.
 //
 // The `CobsCodec` library target is Swift-standard-library-only (no Foundation,
 // no Apple frameworks, no external dependencies) so it stays portable to Linux
@@ -9,7 +10,7 @@
 import PackageDescription
 
 let package = Package(
-    name: "cobs_codec_swift",
+    name: "cobs_codec",
     platforms: [
         .macOS(.v13),
         .iOS(.v16),

README.md

@@ -29,9 +29,7 @@ dependencies: [
     .package(url: "https://github.com/firechip/cobs_codec_swift.git", from: "1.0.0"),
 ],
 targets: [
-    .target(name: "YourTarget", dependencies: [
-        .product(name: "CobsCodec", package: "cobs_codec_swift"),
-    ]),
+    .target(name: "YourTarget", dependencies: ["CobsCodec"]),
 ]
 ```