Some minor clarifications in the documentation

[pstansell]

This is quite a minor point, but the documentation from ?LinUCBGeneralPolicy mentions "Algorithm 1 LinUCB" in the paper by Lihong Li et all (2010), whereas the documentation from ?LinUCBDisjointPolicy does not. However, comparing Algorithm 1 from the paper with your code it seems that LinUCBDisjointPolicy is exactly "Algorithm 1 LinUCB" from the paper, whereas LinUCBGeneralPolicy is similar but not the same (more like the other part of the LinUCB hydrid model that is not in LinUCBDisjointPolicy). If I'm right, I think it would helpful for the documentation to state explicitly that LinUCBDisjointPolicy is "Algorithm 1 LinUCB" from Li's paper.

Also, the description for the documentation from ?LinUCBHybridPolicy refers to LinUCBHybridOptimizedPolicy. I guess that both LinUCBHybridPolicy and LinUCBHybridOptimizedPolicy are exactly "Algorithm 2 LinUCB with hybrid linear models" from Li's paper. Again, if I'm correct, I think it would helpful to state this explicitly in the documentation.

[robinvanemden]

Thanks, @pstansell ! You are correct - I have made the requested changes to the documentation.