[Tags] Fix `[p]tag settings dump` command

[Injabie3]

Command is erroring out, should root cause and fix it.

[quachtridat]

Traceback log:

Traceback (most recent call last):
  File "$REN_VENV_PATH/lib/python3.8/site-packages/$DISCORD_PKG/discord/ext/commands/core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "$REN_PATH/cogs/tags/tags.py", line 368, in dump
    with open(DUMP_IN, "r") as inputFile, open(DUMP_OUT, "w") as outputFile:
FileNotFoundError: [Errno 2] No such file or directory: 'data/tags/tags.json'

Looks like we need to reconfigure the path to the JSON file.