fix chr ID

[Cristianetaniguti]

• Fix remaining bug for cases in which chr ID has "_" included

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.94%. Comparing base (18ad68d) to head (6ef6978).
Report is 17 commits behind head on development.

Additional details and impacted files

@@ Coverage Diff @@## development #39 +/- ##
===============================================
+ Coverage 84.14% 84.94% +0.79% 
===============================================
Files 16 18 +2 Lines 1148 1242 +94 ===============================================
+ Hits 966 1055 +89 - Misses 182 187 +5 

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