Remove all instances of permalink: in YAML frontmatter

Converts existing permalink paths into redirect_from entries.

QubesOS/qubes-issues#6701

developer/debugging/automated-tests.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/automated-tests/
 redirect_from:
+- /doc/automated-tests/
 - /en/doc/automated-tests/
 - /doc/AutomatedTests/
 ref: 45

developer/debugging/mount-lvm-image.md

@@ -1,7 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/mount-lvm-image/
+redirect_from:
+- /doc/mount-lvm-image/
 ref: 46
 ---
 

developer/debugging/profiling.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/profiling/
 redirect_from:
+- /doc/profiling/
 - /en/doc/profiling/
 - /doc/Profiling/
 - /wiki/Profiling/

developer/debugging/safe-remote-ttys.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/safe-remote-ttys/
 redirect_from:
+- /doc/safe-remote-ttys/
 - /en/doc/safe-remote-ttys/
 ref: 49
 ---

developer/debugging/test-bench.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/test-bench/
 redirect_from:
+- /doc/test-bench/
 - /en/doc/test-bench/
 - /doc/TestBench/
 - /wiki/TestBench/

developer/debugging/vm-interface.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/vm-interface/
 redirect_from:
+- /doc/vm-interface/
 - /en/doc/vm-interface/
 - /doc/VMInterface/
 - /doc/SystemDoc/VMInterface/

developer/debugging/windows-debugging.md

@@ -1,8 +1,8 @@
 ---
 lang: en
 layout: doc
-permalink: /doc/windows-debugging/
 redirect_from:
+- /doc/windows-debugging/
 - /en/doc/windows-debugging/
 - /doc/WindowsDebugging/
 - /wiki/WindowsDebugging/