Rollup merge of rust-lang#94605 - Michcioperz:patch-1, r=pnkfelix

Add missing links in platform support docs

I was looking at m68k support and saw that https://doc.rust-lang.org/rustc/platform-support.html and the sidebar there were missing some links to target documentation

Author: Dylan-DPC

src/doc/rustc/src/SUMMARY.md

@@ -15,12 +15,15 @@
 - [Platform Support](platform-support.md)
     - [Template for target-specific documentation](platform-support/TEMPLATE.md)
     - [aarch64-apple-ios-sim](platform-support/aarch64-apple-ios-sim.md)
+    - [aarch64-unknown-none-hermitkernel](platform-support/aarch64-unknown-none-hermitkernel.md)
     - [armv7-unknown-linux-uclibceabi](platform-support/armv7-unknown-linux-uclibceabi.md)
     - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md)
     - [\*-kmc-solid_\*](platform-support/kmc-solid.md)
+    - [m68k-unknown-linux-gnu](platform-support/m68k-unknown-linux-gnu.md)
+    - [mips64-openwrt-linux-musl](platform-support/mips64-openwrt-linux-musl.md)
     - [*-unknown-openbsd](platform-support/openbsd.md)
-    - [x86_64-unknown-none](platform-support/x86_64-unknown-none.md)
     - [wasm64-unknown-unknown](platform-support/wasm64-unknown-unknown.md)
+    - [x86_64-unknown-none](platform-support/x86_64-unknown-none.md)
 - [Target Tier Policy](target-tier-policy.md)
 - [Targets](targets/index.md)
     - [Built-in Targets](targets/built-in.md)

src/doc/rustc/src/platform-support.md

@@ -248,9 +248,9 @@ target | std | host | notes
 `i686-uwp-windows-gnu` | ? |  |
 `i686-uwp-windows-msvc` | ? |  |
 `i686-wrs-vxworks` | ? |  |
-`m68k-unknown-linux-gnu` | ? |  | Motorola 680x0 Linux
+[`m68k-unknown-linux-gnu`](platform-support/m68k-unknown-linux-gnu.md) | ? |  | Motorola 680x0 Linux
 `mips-unknown-linux-uclibc` | ✓ |  | MIPS Linux with uClibc
-`mips64-openwrt-linux-musl` | ? |  | MIPS64 for OpenWrt Linux MUSL
+[`mips64-openwrt-linux-musl`](platform-support/mips64-openwrt-linux-musl.md) | ? |  | MIPS64 for OpenWrt Linux MUSL
 `mipsel-sony-psp` | * |  | MIPS (LE) Sony PlayStation Portable (PSP)
 `mipsel-unknown-linux-uclibc` | ✓ |  | MIPS (LE) Linux with uClibc
 `mipsel-unknown-none` | * |  | Bare MIPS (LE) softfloat