Add info about nightly builds table, plus .deb/.rpm installers (#51621)

* Add info about nightly builds table, plus .deb/.rpm installers

* Fixup

* Disambiguate

* Update README.md

Co-authored-by: Chris Ross <Tratcher@Outlook.com>

* Update README.md

---------

Co-authored-by: Chris Ross <Tratcher@Outlook.com>

Author: wtgodbe

README.md

@@ -46,16 +46,18 @@ See [CODE-OF-CONDUCT](./CODE-OF-CONDUCT.md)
 
 ## Nightly builds
 
-| Platform | Runtime (Installer) | Runtime (Binaries) | Hosting Bundle (Installer) |
+This table includes links to download the latest builds of the ASP.NET Core Shared Framework. Also included are links to download the Windows Hosting Bundle, which includes the ASP.NET Core Shared Framework, the .NET Runtime Shared Framework, and the IIS plugin (ASP.NET Core Module). You can download the latest .NET Runtime builds [here](https://github.com/dotnet/runtime/blob/main/docs/project/dogfooding.md#nightly-builds-table), and the latest .NET SDK builds [here](https://github.com/dotnet/installer#table). If you're unsure what you need then install the SDK; it has everything except the IIS plugin.
+
+| Platform | Shared Framework (Installer) | Shared Framework (Binaries) | Hosting Bundle (Installer) |
 | :--------- | :----------: | :----------: | :----------: |
 | **Windows x64** | [Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-x64.exe) | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-x64.zip) | [Installer](aka.ms/dotnet/9.0/daily/dotnet-hosting-win.exe) |
 | **Windows x86** | [Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-x86.exe) | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-x86.zip) | [Installer](aka.ms/dotnet/9.0/daily/dotnet-hosting-win.exe) |
 | **Windows arm64** | [Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-arm64.exe) | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-win-arm64.zip) | [Installer](aka.ms/dotnet/9.0/daily/dotnet-hosting-win.exe) |
 | **macOS x64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-osx-x64.tar.gz) | **N/A** |
 | **macOS arm64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-osx-arm64.tar.gz) | **N/A** |
-| **Linux x64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-x64.tar.gz) | **N/A** |
+| **Linux x64** | [Deb Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-x64.deb) - [RPM Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-x64.rpm) | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-x64.tar.gz) | **N/A** |
 | **Linux arm** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-arm.tar.gz) | **N/A** |
-| **Linux arm64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-arm64.tar.gz) | **N/A** |
+| **Linux arm64** | [RPM Installer](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-aarch64.rpm) | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-arm64.tar.gz) | **N/A** |
 | **Linux-musl-x64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-musl-x64.tar.gz) | **N/A** |
 | **Linux-musl-arm** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-musl-arm.tar.gz) | **N/A** |
 | **Linux-musl-arm64** | **N/A** | [Binaries](aka.ms/dotnet/9.0/daily/aspnetcore-runtime-linux-musl-arm64.tar.gz) | **N/A** |