Fix amino codec route

[ValarDragon]

Description

cosmos/cosmos-sdk#10870

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For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

[codecov-commenter]

Codecov Report

Merging #980 (72dfc96) into main (fa738bd) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #980   +/-   ##
=======================================
  Coverage   20.60%   20.60%           
=======================================
  Files         193      193           
  Lines       25232    25232           
=======================================
  Hits         5200     5200           
  Misses      19080    19080           
  Partials      952      952           

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[mattverse]

LGTM!