Add link to TableDistances.jl

[juliohm]

In machine learning, distances are often computed with heterogeneous tables (e.g., kernel methods). This link can save users of Distances.jl a ton of time reinventing the wheel.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.04%. Comparing base (886ad02) to head (1c291d8).
Report is 1 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (886ad02) and HEAD (1c291d8). Click for more details.

HEAD has 2 uploads less than BASE

Flag	BASE (886ad02)	HEAD (1c291d8)
	5	3

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #270       +/-   ##
===========================================
- Coverage   95.86%   79.04%   -16.83%     
===========================================
  Files          10       10               
  Lines         944      606      -338     
===========================================
- Hits          905      479      -426     
- Misses         39      127       +88     

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[juliohm]

cc: @dkarrasch