fix: correct spacing of celestia banner

[tzdybal]

Fix #1504

Overview

Now it looks like:

$ celestia --help

	    ____      __          __  _
	  / ____/__  / /__  _____/ /_(_)___ _
	 / /   / _ \/ / _ \/ ___/ __/ / __  /
	/ /___/  __/ /  __(__  ) /_/ / /_/ /
	\____/\___/_/\___/____/\__/_/\__,_/

Usage:
  celestia [command]

Available Commands:
  bridge      Manage your Bridge node
  full        Manage your Full node
  light       Manage your Light node
  version     Show information about the current binary build

Flags:
  -h, --help   help for celestia

Additional help topics:
  celestia         

Use "celestia [command] --help" for more information about a command.

Checklist

• New and updated code has appropriate documentation
• New and updated code has new and/or updated testing
• Required CI checks are passing
• Visual proof for any user facing features like CLI or documentation updates
• Linked issues closed with keywords

[codecov-commenter]

Codecov Report

Merging #1505 (d5b75b2) into main (a7c591d) will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1505      +/-   ##
==========================================
+ Coverage   55.34%   55.37%   +0.02%     
==========================================
  Files         203      203              
  Lines       12147    12147              
==========================================
+ Hits         6723     6726       +3     
+ Misses       4752     4750       -2     
+ Partials      672      671       -1     

Impacted Files	Coverage Δ
cmd/celestia/main.go	62.50% <ø> (ø)
header/core/listener.go	58.49% <0.00%> (+5.66%)	⬆️

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[distractedm1nd]

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