Remove backslash before < (#39107)

docs/fundamentals/toc.yml

@@ -244,7 +244,7 @@ items:
  items:
  - name: Nullable class
  href: runtime-libraries/system-nullable.md
- - name: Nullable\<T> class
+ - name: Nullable<T> class
  href: runtime-libraries/system-nullable{t}.md
  - name: Generic types
  items:
@@ -283,11 +283,11 @@ items:
  href: ../standard/collections/thread-safe/index.md?toc=/dotnet/fundamentals/toc.json&bc=/dotnet/breadcrumb/toc.json
  - name: Supplemental API remarks
  items:
- - name: HashSet\<T> class
+ - name: HashSet<T> class
  href: runtime-libraries/system-collections-generic-hashset{t}.md
- - name: List\<T> class
+ - name: List<T> class
  href: runtime-libraries/system-collections-generic-list{t}.md
- - name: ObservableCollection\<T> class
+ - name: ObservableCollection<T> class
  href: runtime-libraries/system-collections-objectmodel-observablecollection{t}.md
  - name: Delegates and lambdas
  href: ../standard/delegates-lambdas.md
@@ -469,7 +469,7 @@ items:
  href: ../standard/memory-and-spans/memory-t-usage-guidelines.md
  - name: Supplemental API remarks
  items:
- - name: Span\<T> struct
+ - name: Span<T> struct
  href: runtime-libraries/system-span{t}.md
  - name: SIMD-enabled types
  href: ../standard/simd.md