[salt-lint] Switch tabs to spaces in `postfix/files/mapping.j2`

[myii]

Introducing salt-lint, got a violation triggered here:

postfix-formula/postfix/files/mapping.j2

Lines 11 to 13 in 561d094

	{{ key }}{% if colon %}:{% endif %} {{ value|join(", ") }}
	{%- else -%}
	{{ key }}{% if colon %}:{% endif %} {{ value }}

Examining postfix/files/mapping.j2 of type state
[203] Most files should not contain tabs
postfix/files/mapping.j2:11
{{ key }}{% if colon %}:{% endif %}     {{ value|join(", ") }}

[203] Most files should not contain tabs
postfix/files/mapping.j2:13
{{ key }}{% if colon %}:{% endif %}     {{ value }}

@0xf10e @alxwr Are the tabs absolutely necessary here or can they be changed to spaces?

[0xf10e]

I don't think tabs are necessary here.

[myii]

Thanks for the feedback, @0xf10e.