Fix input parameter name

Author: PaulHatch

readme.md

@@ -108,7 +108,7 @@ it will be given the new version if the build were to be retriggered, for exampl
 - *major*, *minor*, and *patch* provide the version numbers that have been determined for this commit
 - *increment* is an additional value indicating the number of commits for the current version, starting at zero. This can be used as part of a pre-release label. 
 - *version_type* is the type of version change the new version represents, e.g. `major`, `minor`, `patch`, or `none`.
-- *formatted_version* is a formatted version string created using the format input. This is a convenience value to provide a preformatted representation of the data generated by this action.
+- *version_format* is a formatted version string created using the format input. This is a convenience value to provide a preformatted representation of the data generated by this action.
 - *version_tag* is a string identifier that would be used to tag the current commit as the "released" version. Typically this would only be used to generate a Git tag name.
 - *changed* indicates whether there was a change since the last version if change_path was specified. If no `change_path` was specified this value will always be true since the entire repo is considered. (It is possible to create a commit with no changes, but the Git cli rejects this by default and this case is not considered here)
 - *authors* is a list of authors that have committed to this version, formatted as either csv or json.