docs(contributing): fix links to rid and metrics
### Deno and Linux analogy
| **Linux** | **Deno** |
-| ------------------------------: | :------------------------------- |
+| ------------------------------: | :------------------------------------------- |
| Processes | Web Workers |
| Syscalls | Ops |
-| File descriptors (fd) | [Resource ids (rid)](#resources) |
+| File descriptors (fd) | [Resource ids (rid)](architecture#resources) |
| Scheduler | Tokio |
| Userland: libc++ / glib / boost | https://deno.land/std/ |
-| /proc/\$\$/stat | [Deno.metrics()](#metrics) |
+| /proc/\$\$/stat | [Deno.metrics()](architecture#metrics) |
| man pages | deno types |
#### Resources
