Various fixes in the readme
Various fixes in the readme

- Fixed typo in first paragraph (taht --> that)
- Use four spaces for indentation instead of tabs for a more consistent style
- Placed the word 'the' before 'wiki'
scd4j/gradle-plugins,mateusmcosta/gradle-plugins,scd4j/gradle-plugins,mateusmcosta/gradle-plugins,fbrubbo/gradle-plugins,fbrubbo/gradle-plugins