Skipping overwrite in some case but should do.

[0daryo]

Describe the bug
Formatter can skip overwriting file when contents are modified and contents are mutated.
Cause append can modify its pointer value. e.g. enough cap capacity.

swag/formatter.go

Line 93 in 10f006f

contents = append(prefix, append(edit.replacement, suffix...)...)

To Reproduce
Steps to reproduce the behavior:

1. Run test code with annotation below.(only space between // and @ should be fixed. the rest are formatted.)
   Format Skipped.

// @Summary		Add a new pet to the store

#1915 (comment)
2. Fail.

Expected behavior
Always compare original file and formatted file exactly.

Your swag version
e.g. 1.6.3

Your go version
e.g. go1.22.0

Desktop (please complete the following information):

Additional context
Add any other context about the problem here.