Fix period in sentences

[int-y1]

minor message cleanup

[codecov-commenter]

Codecov Report

Merging #1992 (3c219fa) into master (e683f87) will not change coverage.
The diff coverage is 0.00%.

@@           Coverage Diff           @@
##           master    #1992   +/-   ##
=======================================
  Coverage   46.51%   46.51%           
=======================================
  Files         236      236           
  Lines       13085    13085           
=======================================
  Hits         6086     6086           
  Misses       6999     6999           

Impacted Files	Coverage Δ
judge/social_auth.py	41.55% <ø> (ø)
judge/utils/problem_data.py	15.62% <0.00%> (ø)
judge/views/problem_data.py	36.84% <0.00%> (ø)
judge/views/register.py	50.70% <ø> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[Xyene]

LGTM, thanks!