docs: add missing documentation for the MS Build Analyzer (#7113)

Author: jeremylong

src/site/markdown/analyzers/index.md

@@ -9,7 +9,8 @@ to extract identification information from the files analyzed.
 | [Assembly](./assembly-analyzer.html) | .NET Assemblies (\*.exe, \*.dll) | Uses [GrokAssembly.exe](https://github.com/colezlaw/GrokAssembly); requires the dotnet core 8.0 runtime to be installed. |
 | [Jar](./jar-analyzer.html) | Java archive files (\*.jar); Web application archive (\*.war) | Examines archive manifest metadata, and Maven Project Object Model files (pom.xml). |
 | [RetireJS](./retirejs-analyzer.html) | JavaScript files | Analyzes JavaScript files using the [RetireJS](https://github.com/RetireJS/retire.js) database. |
-| [Node.js](./nodejs.html) | NPM package specification files (package.json) | Parses the package.json to gather a bill-of-materials for a Node JS project. |
+| [MS Build](./msbuild.html) | MS Build files (\*.csproj, \*.vbproj) | Parses the project files, including related directory build or package properties, to gather dependency information. |
+| [Node.js](./nodejs.html) | NPM package specification files (package.json) | Parses the package.json to gather a dependency information for a Node JS project. |
 | [Node Audit](./node-audit-analyzer.html) | Uses the `npm audit` APIs to report on known vulnerable node.js libraries. This analyzer requires an Internet connection. |
 | [Nugetconf](./nugetconf-analyzer.html) | Nuget packages.config file | Uses XPath to parse specification XML. |
 | [Nuspec](./nuspec-analyzer.html) | Nuget package specification file (\*.nuspec) | Uses XPath to parse specification XML. |

src/site/markdown/analyzers/msbuild.md

@@ -0,0 +1,7 @@
+MS Build Analyzer
+==============
+
+The MS Build Analyzer will parse csproj and vbproj files to gather infromation
+on the projects dependencies.
+
+Files Scanned: *.csproj, *.vbproj, and related Directory.Build.props and Directory.Packages.props.