Bugfix: msm.utils.standardise_dataframe, code indentation

[Magnus167]

The functions return was at the wrong indentation level

[codecov]

Codecov Report

Merging #974 (94d588d) into develop (c7592b8) will not change coverage.
Report is 1 commits behind head on develop.
The diff coverage is 0.00%.

❗ Current head 94d588d differs from pull request most recent head 628e79c. Consider uploading reports for the commit 628e79c to get more accurate results

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #974   +/-   ##
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  Coverage    63.69%   63.69%           
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  Files           40       40           
  Lines         4644     4644           
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  Hits          2958     2958           
  Misses        1686     1686           

Files Changed	Coverage Δ
macrosynergy/management/utils.py	65.56% <0.00%> (ø)