docs: sweep markdown display urls

changelog.md

@@ -2,8 +2,8 @@
 
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
-and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The format is based on [Keep a Changelog](//keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](//semver.org/spec/v2.0.0.html).
 
 A `### Breaking` section is used in addition to Keep a Changelog's standard sections to explicitly document changes that are backwards-incompatible but would otherwise appear under `### Changed`. Entries under `### Breaking` trigger a major version bump in automated release recommendation logic.
 
@@ -22,6 +22,7 @@ A `### Breaking` section is used in addition to Keep a Changelog's standard sect
 
 ### Fixed
 
+- Browser-facing URLs emitted in generated changelog links, workflow summaries, and markdown now use protocol-relative `//` forms.
 - Prepare now recreates the standard `Unreleased` section headers after promoting notes into a tagged release entry.
 - First-release recommendation remains `v1.0.0` when no prior releases exist in the changelog.
 - Do Release smoke validation now expects `--recommend` to fail on tagged release checkouts where `Unreleased` is intentionally empty.
@@ -62,5 +63,5 @@ A `### Breaking` section is used in addition to Keep a Changelog's standard sect
 - Project/automation rename from `releaseprep` to `vociferate` (entrypoint, package paths, outputs).
 - README guidance focused on primary cross-repository reuse workflows.
 
-[Unreleased]: http://teapot:3000/aether/vociferate/src/branch/main
-[0.1.0]: http://teapot:3000/aether/vociferate/releases/tag/v0.1.0
+[Unreleased]: //teapot:3000/aether/vociferate/src/branch/main
+[0.1.0]: //teapot:3000/aether/vociferate/releases/tag/v0.1.0