chore: fix typos

[stanlagermin]

Hi, I have just fixed some typos.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (eb42157) 47.90% compared to head (6032cbb) 47.26%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1300      +/-   ##
==========================================
- Coverage   47.90%   47.26%   -0.65%     
==========================================
  Files         372      367       -5     
  Lines       62990    61485    -1505     
==========================================
- Hits        30177    29058    -1119     
+ Misses      30352    30036     -316     
+ Partials     2461     2391      -70     

Files	Coverage Δ
tm2/pkg/bft/consensus/ticker.go	90.32% <ø> (ø)
tm2/pkg/bft/rpc/client/mock/client.go	21.56% <ø> (ø)
tm2/pkg/bft/types/evidence.go	45.37% <ø> (ø)
tm2/pkg/db/prefix_db.go	55.00% <ø> (+0.30%)	⬆️

... and 46 files with indirect coverage changes

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[thehowl]

thanks!