Fix a minor typo typos in the JNLP TCP Port help text
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- Jenkins uses a TCP port to communicate with agent agents launched via JNLP.
+ Jenkins uses a TCP port to communicate with agents launched via JNLP.
Normally this port is chosen randomly to avoid collisions, but this would
make securing the system difficult. If you are not using JNLP agents,
it's recommend to disable this TCP port. Alternatively, you can specify
