Text output: removed trailing spaces for right-padding of tables

[cmaglie]

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What kind of change does this PR introduce?

Remove the right-padding of tables of the CLI.

What is the current behavior?

See #2289:

Here is an example of what the current behavior looks like, with = replacing spaces to make it clearer.

Sketch=uses=58120=bytes=(11%)=of=program=storage=space.=Maximum=is=507904=bytes.

Used=library===============Version=Path==================================================
CAN=Adafruit=Fork==========1.2.1===/home/trb/Arduino/libraries/arduino-CAN-master========
LibPrintf==================1.2.13==/home/trb/Arduino/libraries/LibPrintf=================
Adafruit=SleepyDog=Library=1.6.4===/home/trb/Arduino/libraries/Adafruit_SleepyDog_Library

What is the new behavior?

No trailing spaces.

Does this PR introduce a breaking change, and is titled accordingly?

No

Other information

Fix #2289

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.06% ⚠️

Comparison is base (3f9373a) 63.40% compared to head (5614168) 63.34%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2290      +/-   ##
==========================================
- Coverage   63.40%   63.34%   -0.06%     
==========================================
  Files         219      219              
  Lines       19536    19537       +1     
==========================================
- Hits        12386    12375      -11     
- Misses       6069     6078       +9     
- Partials     1081     1084       +3     

Flag	Coverage Δ
unit	63.34% <100.00%> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
table/table.go	90.65% <100.00%> (+0.08%)	⬆️

... and 1 file with indirect coverage changes

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