testing: fixing a typo in e2e.sh for integration tests

[algojack]

Summary

fixing a typo in e2e.sh for integration tests

Test Plan

Tested in CircleCI/TravisCI tests

[codecov-commenter]

Codecov Report

Merging #2761 (7668bd1) into master (66e54d9) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2761   +/-   ##
=======================================
  Coverage   47.12%   47.12%           
=======================================
  Files         349      349           
  Lines       56326    56326           
=======================================
+ Hits        26541    26544    +3     
+ Misses      26814    26811    -3     
  Partials     2971     2971           

Impacted Files	Coverage Δ
ledger/roundlru.go	90.56% <0.00%> (-5.67%)	⬇️
crypto/merkletrie/trie.go	66.42% <0.00%> (-2.19%)	⬇️
crypto/merkletrie/node.go	91.62% <0.00%> (-1.87%)	⬇️
network/requestTracker.go	70.25% <0.00%> (-0.87%)	⬇️
ledger/acctupdates.go	62.46% <0.00%> (ø)
network/wsNetwork.go	61.21% <0.00%> (+0.28%)	⬆️
cmd/tealdbg/debugger.go	73.86% <0.00%> (+1.00%)	⬆️
network/wsPeer.go	77.15% <0.00%> (+2.78%)	⬆️

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[algobarb]

Approved so that we can fix the integration tests for master branch.