Fix outdated comment on changelog children

Dependencies

• [2] HF3NERPZ Add cache for changes and add change dependencies to log
• [3] L3VOQYAF Add changelog view to the source control panel
• [4] GNQD74OZ Add pijul.openChange command and text document provider for pijul-change scheme

Change contents

• replacement in src/views/changelog.ts at line 46
  [3.1088]→[3.1088:1125](∅→∅)
  − // Changes don't have children
  [3.1088]

  [2.89]
  + // Show changes which the current one depends on