Changelog: Fix formatting when sct function label is missing (#2260)
Changelog: Fix formatting when sct function label is missing (#2260)

* sct_changelog: When no "sct_" label is present, remove ":" (neuropoly #2253)

* sct_changelog: Reduced lines of code for previous fix

* sct_changelog: carriage return added after last line

* sct_changelog: fixed spacing of comments at top of code that was mistakingly modified

* sct_changelog: reformatting of lines 131 to 134

* sct_changelog: removed unwanted carriage return on line 121

* sct_changelog: replaced "**:**" with "**:** " to avoid extra space after replacement


Former-commit-id: 4ed209b559384ed5fb39254e921ea0d80310aa3b
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox