Update nuget/README.runtime.md

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: shimat

nuget/README.runtime.md

@@ -27,7 +27,6 @@ The Linux `linux-x64` packages are built on **manylinux_2_28** (glibc 2.28) and
 | `OpenCvSharp4.runtime.osx.10.15-x64` | macOS 10.15+ x64 |
 
 > **Note:** `OpenCvSharp4.official.runtime.ubuntu.22.04-x64`, `ubuntu.22.04-x64.slim`, `ubuntu.24.04-x64`, and `ubuntu.24.04-x64.slim` are **deprecated**. Migrate to the portable `linux-x64` packages.
-
 > **Note:** `OpenCvSharp4.runtime.linux-arm` has been renamed to `OpenCvSharp4.runtime.linux-arm64` to correctly reflect the ARM64 (AArch64) RID. The old package is kept as a compatibility shim that automatically pulls in the renamed package, but new projects should reference `OpenCvSharp4.runtime.linux-arm64` directly.
 
 ## Slim Profile