param table edit for PapuansOutOfAfrica_10J19

[andrewkern]

will close #1707

as pointed out in that issue, the docs parameter table for PapuansOutOfAfrica_10J19 was off by two orders of magnitude for two of the migration params.

it used to say:

Migration rate (x10^-4): 31.4 European–East Asian migration rate
Migration rate (x10^-4): 57.2 East Asian–Papuan migration rate

but in the code has:

m_EU_AS = 3.14e-5
m_AS_Papuan = 5.72e-5

this PR fixes this params displayed in the documentation to match the code

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.85%. Comparing base (b410acf) to head (0b8b458).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1708   +/-   ##
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  Coverage   99.85%   99.85%           
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  Files         142      142           
  Lines        4863     4863           
  Branches      470      470           
=======================================
  Hits         4856     4856           
  Misses          3        3           
  Partials        4        4           

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