Fix godoc formatting

[xinaxu]

• Fix everywhere that does not use correct padding for godoc bullet list.
• storage gen now no longer generates exported functions

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.05% ⚠️

Comparison is base (9c42d43) 73.94% compared to head (fd65aaa) 73.89%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #314      +/-   ##
==========================================
- Coverage   73.94%   73.89%   -0.05%     
==========================================
  Files         130      130              
  Lines        8065     8065              
==========================================
- Hits         5964     5960       -4     
- Misses       1473     1475       +2     
- Partials      628      630       +2     

Files Changed	Coverage Δ
analytics/analytics.go	67.30% <ø> (ø)
api/api.go	74.15% <ø> (ø)
docs/swagger/docs.go	100.00% <ø> (ø)
handler/admin/init.go	57.14% <ø> (ø)
handler/admin/reset.go	45.45% <ø> (ø)
handler/dataprep/create.go	69.31% <ø> (ø)
handler/dataprep/explore.go	72.36% <ø> (ø)
handler/dataprep/list.go	100.00% <ø> (ø)
handler/dataprep/listschedules.go	78.57% <ø> (ø)
handler/dataprep/output.go	72.72% <ø> (ø)
... and 51 more

... and 1 file with indirect coverage changes

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