Fix filename in solution

Author: sandermvanvliet

Serilog.Enrichers.Sensitive.sln

@@ -17,7 +17,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Serilog.Enrichers.Sensitive
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{F079FFF2-FE22-46F3-86E2-248A268D8AFD}"
 	ProjectSection(SolutionItems) = preProject
-		CHANGELOG = CHANGELOG
+		CHANGELOG.md = CHANGELOG.md
 		Directory.Build.props = Directory.Build.props
 		LICENSE = LICENSE
 		README.md = README.md