Multi doc fixes

[sspencerwire]

• Nextcloud: change "test editor" to "text editor" and add tags
• DokuWiki: add meta, fix more than 1 "#" heading issue, fix typo "Go
  ahead an link..." to "Go ahead and link..."
• MATE: fix conclusion paragraph which did not make sense. Added known
  meta and tags.
• DNS Bind: Fix "each number separated by a comma" to correct "each
  number separated by a period". Fix "down one so that is" to "down one so
  that it is". Add meta and tags.
• Micro: Fix "However, if you want to check the it out..." to "However,
  if you want to check it out..." Add tags to meta.
• VSFTPD: Fix unclear sentence to two sentences: "We need to create a
  file to read the virtual users and passwords from. This will create the
  database." Add tags.
• Networking Configuration: Fix spelling of "automatically". Add in code
  blocks. Fix code blocks. Add an appropriate admonition in place of bold
  text. Reworded one sentence to: "The following shows an example for the
  default configuration of a server:"
• Let's Encrypt: Fix multiple "#" headings. Fix "this deals with the
  next line that regarding..." to "this deals with the next line
  regarding..." Add tags.
• SSH Public and Private Keys: Fix multiple "#" headings. Fix spelling
  mistake. Add admonition in place of bold text. Minor change to wording
  in Introduction. Add meta and tags.
• Generating SSL Keys: Fix multiple "#" headings. Change: "causes higher
  CPU load..." to "and causes higher CPU load". Fix formatting on
  everything below: "This opens up a dialog..." Add meta and tags.
• Nginx-Mainline: Reword the paragraph that started with "Now to open up
  the necessary ports..." Fix the line that read "you should make you can
  run" to "you should run..." Fix "The time is coming when browsers
  maight..." to "The time is coming when browsers might..." and remove
  "even" in the same line. Add tags to meta.

Author checklist (Completed by original Author)

• Contribution a good fit for the Rocky project? Title and Author MetaTags inserted ?
• Is this a non-English contribution?
• If applicable, steps and instructions have been tested to work on a real system
• Did you perform an initial self-review to fix basic typos and grammatical correctness

Rocky Documentation checklist (Completed by Rocky team)

• 1st Pass (Check that document is good fit for project and author checklist completed)
• 2nd Pass (Technical Review - check for technical correctness)
• 3rd Pass (Basic Editorial Review)
• 4th Pass (Detailed Editorial Review and Peer Review)
• Final pass/approval (Final Review)