fixes spelling issue in name of RFOVE tool

FOR CONTRIBUTOR:

[x] - I have read the CONTRIBUTING.md document and this tool is appropriate for the galaxy-image-analysis repo.
[x] - License permits unrestricted use (educational + commercial)
[ ] - This PR adds a new tool or tool collection
[x] - This PR updates an existing tool or tool collection
[ ] - This PR does something else (explain below)
[x] - Tools added/updated by this PR (if any) comply with the Naming and Annotation Conventions for Tools in the Image Community in Galaxy (or please explain why they do not)

BMCV / galaxy-image-analysis