Use zola's page_template feature

blog/content/second-edition/extra/_index.md

@@ -3,4 +3,5 @@ title = "Extra Content"
 insert_anchor_links = "left"
 render = false
 sort_by = "weight"
+page_template = "second-edition/extra.html"
 +++

blog/content/second-edition/extra/building-on-android/index.md

@@ -1,7 +1,7 @@
 +++
 title = "Building on Android"
 weight = 3
-template = "second-edition/extra.html"
+
 +++
 
 I finally managed to get `blog_os` building on my Android phone using [termux](https://termux.com/). This post explains the necessary steps to set it up.

blog/content/second-edition/extra/disable-red-zone/index.md

@@ -2,7 +2,7 @@
 title = "Disable the Red Zone"
 weight = 1
 path = "red-zone"
-template = "second-edition/extra.html"
+
 +++
 
 The [red zone] is an optimization of the [System V ABI] that allows functions to temporary use the 128 bytes below its stack frame without adjusting the stack pointer:

blog/content/second-edition/extra/disable-simd/index.md

@@ -2,7 +2,7 @@
 title = "Disable SIMD"
 weight = 2
 path = "disable-simd"
-template = "second-edition/extra.html"
+
 +++
 
 [Single Instruction Multiple Data (SIMD)] instructions are able to perform an operation (e.g. addition) simultaneously on multiple data words, which can speed up programs significantly. The `x86_64` architecture supports various SIMD standards: