Update SurrogatesMOE docs

[codecov[bot]]

Codecov Report

Merging #407 (2f89acb) into master (9b1df45) will increase coverage by 0.23%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #407      +/-   ##
==========================================
+ Coverage   83.83%   84.06%   +0.23%     
==========================================
  Files          16       16              
  Lines        2567     2567              
==========================================
+ Hits         2152     2158       +6     
+ Misses        415      409       -6     

Impacted Files	Coverage Δ
src/Optimization.jl	81.30% <0.00%> (+0.16%)	:arrow_up:
src/Surrogates.jl	36.36% <0.00%> (+18.18%)	:arrow_up:

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[vikram-s-narayan]

Docs don't build because of this:ArgumentError: Package SurrogatesMOE not found in current path.