Fix typo in [ |SYN_OPT-V| ] and correct -T option syntax

[Chuan1937]

Fix typo in [ |SYN_OPT-V| ] and correct -T option syntax

Description of proposed changes
This pull request fixes two minor documentation issues:

1. Corrected a typo in the option reference [ |SYN_OPT-V| ], ensuring consistent formatting with other option references.

2. Fixed the -T option syntax in the documentation, changing

   **-Tc**\ |\ **g**\ |\ **o**\ |\ **s**
   

   to

   **-T**\ **c**\|\ **g**\|\ **o**\|\ **s**
   

Why this change was made
The original documentation contained inconsistent formatting and incorrect escape usage that could cause confusion when reading or generating documentation.

Fixes #

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[joa-quim]

Hi,
Can you please restrict the fix to the first commit? There is nothing wrong that needs to be fixed on the second case.

[seisman]

The -T syntax is wrong. It can be verified in https://rsted.info.ucl.ac.be/