Update loading-snomed.md

[JonZammit]

Changed to "Xmx2g" to be consistent with https://github.com/IHTSDO/snowstorm/blob/master/docs/getting-started.md

[codecov]

Codecov Report

Merging #89 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #89   +/-   ##
=========================================
  Coverage     65.41%   65.41%           
  Complexity     2378     2378           
=========================================
  Files           249      249           
  Lines         10127    10127           
  Branches       1197     1197           
=========================================
  Hits           6625     6625           
  Misses         2995     2995           
  Partials        507      507

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[kaicode]

Well spotted Jon. I'll update the getting started one to max 4g instead.

[kaicode]

Have updated in the develop branch:
https://github.com/IHTSDO/snowstorm/blob/develop/docs/getting-started.md