[templates] Fix onClick event handling for Show more button

[mizdebsk]

Fixes #235

[codecov]

Codecov Report

Merging #237 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #237   +/-   ##
=======================================
  Coverage   82.29%   82.29%           
=======================================
  Files          41       41           
  Lines        3343     3343           
=======================================
  Hits         2751     2751           
  Misses        592      592

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