Revert "Remove all instances of permalink: in YAML frontmatter"

This reverts commit c815e4c54c.

https://github.com/QubesOS/qubes-issues/issues/6701#issuecomment-862822827

developer/releases/1_0/release-notes.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/1.0/release-notes/
 redirect_from:
-- /doc/releases/1.0/release-notes/
 - /en/doc/releases/1.0/release-notes/
 ref: 18
 title: Qubes R1.0 Release Notes

developer/releases/2_0/release-notes.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/2.0/release-notes/
 redirect_from:
-- /doc/releases/2.0/release-notes/
 - /en/doc/releases/2.0/release-notes/
 ref: 25
 title: Qubes R2.0 Release Notes

developer/releases/3_0/release-notes.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/3.0/release-notes/
 redirect_from:
-- /doc/releases/3.0/release-notes/
 - /en/doc/releases/3.0/release-notes/
 ref: 19
 title: Qubes R3.0 Release Notes

developer/releases/3_0/schedule.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/3.0/schedule/
 redirect_from:
-- /doc/releases/3.0/schedule/
 - /en/doc/releases/3.0/schedule/
 ref: 20
 title: Qubes R3.0 Release Schedule

developer/releases/3_1/release-notes.md

@@ -1,8 +1,7 @@
 ---
 lang: en
 layout: doc
-redirect_from:
-- /doc/releases/3.1/release-notes/
+permalink: /doc/releases/3.1/release-notes/
 ref: 16
 title: Qubes R3.1 release notes
 ---

developer/releases/3_1/schedule.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/3.1/schedule/
 redirect_from:
-- /doc/releases/3.1/schedule/
 - /en/doc/releases/3.1/schedule/
 ref: 17
 title: Qubes R3.1 Release Schedule

developer/releases/3_2/release-notes.md

@@ -1,8 +1,7 @@
 ---
 lang: en
 layout: doc
-redirect_from:
-- /doc/releases/3.2/release-notes/
+permalink: /doc/releases/3.2/release-notes/
 ref: 21
 title: Qubes R3.2 release notes
 ---

developer/releases/3_2/schedule.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/3.2/schedule/
 redirect_from:
-- /doc/releases/3.2/schedule/
 - /en/doc/releases/3.2/schedule/
 ref: 22
 title: Qubes R3.2 Release Schedule

developer/releases/4_0/release-notes.md

@@ -1,8 +1,7 @@
 ---
 lang: en
 layout: doc
-redirect_from:
-- /doc/releases/4.0/release-notes/
+permalink: /doc/releases/4.0/release-notes/
 ref: 23
 title: Qubes R4.0 release notes
 ---

developer/releases/4_0/schedule.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/4.0/schedule/
 redirect_from:
-- /doc/releases/4.0/schedule/
 - /en/doc/releases/4.0/schedule/
 ref: 24
 title: Qubes R4.0 Release Schedule

developer/releases/notes.md

@@ -1,8 +1,7 @@
 ---
 lang: en
 layout: doc
-redirect_from:
-- /doc/releases/notes/
+permalink: /doc/releases/notes/
 ref: 13
 title: Release Notes
 ---

developer/releases/schedules.md

@@ -1,8 +1,7 @@
 ---
 lang: en
 layout: doc
-redirect_from:
-- /doc/releases/schedules/
+permalink: /doc/releases/schedules/
 ref: 15
 title: Release Schedules
 ---

developer/releases/todo.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
+permalink: /doc/releases/todo/
 redirect_from:
-- /doc/releases/todo/
 - /en/doc/releases/todo/
 ref: 14
 title: Release Checklist