updated misleading help option

Author: arturcic

docs/input/docs/usage/cli/arguments.md

@@ -65,13 +65,10 @@ GitVersion [path]
                     (.csproj/.vbproj/.fsproj) files in the git repo and update
                     them
                     Note: This is only compatible with the newer Sdk projects
-    /updateassemblyinfofilename
-                    Specify name of AssemblyInfo file. Can also
-                    /updateAssemblyInfo GlobalAssemblyInfo.cs as a shorthand
     /ensureassemblyinfo
                     If the assembly info file specified with
-                    /updateassemblyinfo or /updateassemblyinfofilename is not
-                    found, it be created with these attributes:
+                    /updateassemblyinfo is not
+                    found, it will be created with these attributes:
                     AssemblyFileVersion, AssemblyVersion and
                     AssemblyInformationalVersion.
                     Supports writing version info for: C#, F#, VB

src/GitVersion.App.Tests/HelpWriterTests.cs

@@ -41,7 +41,8 @@ public void AllArgsAreInHelp()
 
         var ignored = new[]
         {
-            nameof(Arguments.Authentication)
+            nameof(Arguments.Authentication),
+            nameof(Arguments.UpdateAssemblyInfoFileName)
         };
         typeof(Arguments).GetFields()
             .Select(p => p.Name)