add endl, remove extra spaces for consistent Report.sso format

[iantaylor-NOAA]

Concisely describe what has been changed/addressed in the pull request.

Missing linebreak was leading to output where the 0/1 value of the compatibility flag was part of the previous comment ending with "SRR":

#
 #_Regime_used_to_offset_from_SRR0 # timevary_bio_4SRR  #_Compatibility_flag_for_legacy_(0)_vs_improved_(1)_impact_of_timevary_biology_on_benchmark_SRR_calcs
 #_No_timevary_MGparm
#

After the fix it should look like

#
#_Regime_used_to_offset_from_SRR
0 # timevary_bio_4SRR  #_Compatibility_flag_for_legacy_(0)_vs_improved_(1)_impact_of_timevary_biology_on_benchmark_SRR_calcs
#_No_timevary_MGparm
#

What tests have been done?

Ran SS3 with model shared by user, which I will email to nmfs.stock.synthesis@noaa.gov.

What tests/review still need to be done?

None.

Is there an input change for users to Stock Synthesis?

[x] No, there was no input change.