Add an alias for release notes file on create-release

To fix a mistake introduced in ed1b1d8#diff-91a6a333eea8955a7cf22f9b3bf30a49R41.
Fixes #70

source/Octopus.Cli/Commands/Releases/CreateReleaseCommand.cs

@@ -38,7 +38,7 @@ public CreateReleaseCommand(IOctopusAsyncRepositoryFactory repositoryFactory, IO
             options.Add<string>("package=", "[Optional] Version number to use for a package in the release. Format: StepName:Version or PackageID:Version or StepName:PackageName:Version. StepName, PackageID, and PackageName can be replaced with an asterisk. An asterisk will be assumed for StepName, PackageID, or PackageName if they are omitted.", v => versionResolver.Add(v));
             options.Add<string>("packagesFolder=", "[Optional] A folder containing NuGet packages from which we should get versions.", v => {v.CheckForIllegalPathCharacters("packagesFolder"); versionResolver.AddFolder(v);});
             options.Add<string>("releaseNotes=", "[Optional] Release Notes for the new release. Styling with Markdown is supported.", v => ReleaseNotes = v);
-            options.Add<string>("releaseNoteFile=", "[Optional] Path to a file that contains Release Notes for the new release. Supports Markdown files.", ReadReleaseNotesFromFile);
+            options.Add<string>("releaseNoteFile=|releaseNotesFile=", "[Optional] Path to a file that contains Release Notes for the new release. Supports Markdown files.", ReadReleaseNotesFromFile);
             options.Add<bool>("ignoreExisting", "[Optional, Flag] Don't create this release if there is already one with the same version number.", v => IgnoreIfAlreadyExists = true);
             options.Add<bool>("ignoreChannelRules", "[Optional, Flag] Create the release ignoring any version rules specified by the channel.", v => IgnoreChannelRules = true);
             options.Add<string>("packagePrerelease=", "[Optional] Pre-release for latest version of all packages to use for this release.", v => VersionPreReleaseTag = v);