Fix typos in verifyDeployment.md documentation

[Zentex1337]

Summary

• Fixed multiple typos in verifyMainnetDeployment/verifyDeployment.md:
  • "ins a guide" -> "is a guide"
  • "deploymet" -> "deployment"
  • "DOwnload" -> "Download"
  • "btyecode" -> "bytecode"
  • Improved grammar: "you can the script" -> "you can use the script"
  • Improved grammar: "The script in a very similar behaviour" -> "The script has a very similar behaviour"

Test plan

• Visual inspection of the documentation changes