fix(ui): workflow event binding typo

[tooptoop4]

This PR fixes minor text typo

[codecov]

Codecov Report

Merging #6782 (7bba492) into master (63aecdb) will decrease coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #6782      +/-   ##
==========================================
- Coverage   48.65%   48.58%   -0.07%     
==========================================
  Files         264      264              
  Lines       19076    19076              
==========================================
- Hits         9282     9269      -13     
- Misses       8749     8764      +15     
+ Partials     1045     1043       -2     

Impacted Files	Coverage Δ
server/workflow/workflow_server.go	44.41% <0.00%> (-2.40%)	⬇️
cmd/argoexec/commands/emissary.go	50.35% <0.00%> (-1.44%)	⬇️
workflow/controller/operator.go	71.11% <0.00%> (-0.10%)	⬇️

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