dotnet dump docs: mention Triage dump type (#47107)

* dotnet dump docs: mention Triage dump type

* Apply suggestions from code review

---------

Co-authored-by: Meaghan Osagie (Lewis) <[email protected]>

Author: skarfie123

docs/core/diagnostics/dotnet-dump.md

@@ -95,6 +95,7 @@ dotnet-dump collect [-h|--help] [-p|--process-id] [-n|--name] [--type] [-o|--out
   - `Full` - The largest dump containing all memory including the module images.
   - `Heap` - A large and relatively comprehensive dump containing module lists, thread lists, all stacks, exception information, handle information, and all memory except for mapped images.
   - `Mini` - A small dump containing module lists, thread lists, exception information, and all stacks.
+  - `Triage` - A small dump containing module lists, thread lists, exception information, all stacks, and PII removed.
 
   If not specified, `Full` is the default.