update title and description (#43366)

The TOC node and the descriptions could be misleading here.

Fixes #43291

Related to dotnet/roslyn#75789

Author: BillWagner

docfx.json

@@ -791,9 +791,9 @@
                 "_csharplang/proposals/csharp-13.0/ref-struct-interfaces.md": "This proposal provides features that enable interface authors to allow `ref struct` types to implement a particular interface",
                 "_csharplang/proposals/csharp-13.0/partial-properties.md": "This proposal provides for partial properties and indexers, allowing the definition of a property or indexer to be split across multiple parts.",
                 "_csharplang/proposals/csharp-13.0/overload-resolution-priority.md": "This proposal introduces a new attribute, `OverloadResolutionPriorityAttribute`, that can be applied to methods to influence overload resolution.",
-                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md": "Learn about any breaking changes since the initial release of C# 10",
-                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 8.md": "Learn about any breaking changes since the initial release of C# 11",
-                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md": "Learn about any breaking changes since the initial release of C# 12",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 7.md": "Learn about any breaking changes since the initial release of C# 10 and included in C# 11",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 8.md": "Learn about any breaking changes since the initial release of C# 11 and included in C# 12",
+                "_roslyn/docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md": "Learn about any breaking changes since the initial release of C# 12 and included in C# 13",
                 "_vblang/spec/introduction.md": "This chapter provides and introduction to the Visual Basic language.",
                 "_vblang/spec/lexical-grammar.md": "This chapter defines the lexical grammar for Visual Basic.",
                 "_vblang/spec/preprocessing-directives.md": "This chapter defines the preprocessing directives allowed in Visual Basic",

docs/csharp/toc.yml

@@ -149,19 +149,19 @@ items:
   - name: C# 13
     displayName: what's New
     href: whats-new/csharp-13.md
-  - name: Breaking changes in C# 13
+  - name: Breaking changes since C# 12
     href: ../../_roslyn/docs/compilers/CSharp/Compiler%20Breaking%20Changes%20-%20DotNet%209.md
   - name: C# 12
     displayName: what's New
     href: whats-new/csharp-12.md
-  - name: Breaking changes in C# 12
+  - name: Breaking changes since C# 11
     href: ../../_roslyn/docs/compilers/CSharp/Compiler%20Breaking%20Changes%20-%20DotNet%208.md
   - name: C# 11
     items:
     - name: New features
       displayName: what's new
       href: whats-new/csharp-11.md
-    - name: Breaking changes in C# 11
+    - name: Breaking changes since C# 10
       href: ../../_roslyn/docs/compilers/CSharp/Compiler%20Breaking%20Changes%20-%20DotNet%207.md
   - name: C# 10
     href: whats-new/csharp-10.md