Update typse of text method parameters in docs.

[izdwuut]

A pull request for a documentation issue reported by me.

[izdwuut]

I had troubles with transform parameter. Source code says it's number | any, while docs says it's rather number | Matrix. What should we do with it?

[HackbrettXXX]

Thanks for the PR. The type of the transform parameter is number|Matrix. Could you revert the changes in docs/jsPDF.html? The docs are auto-generated and only updated on release.

[izdwuut]

This should have been more obvious to me. I reverted the changes and updated jspdf.js annotation.

[HackbrettXXX]

Thanks. I'll merge it.