ci(docs) replace use of sed with proper configuration variables

docs/porting/display.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/display.md
 ```
 # Display interface
 

docs/porting/gpu.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/gpu.md
 ```
 # Add custom GPU
 LVGL has a flexible and extendable draw pipeline. You can hook it to do some rendering with a GPU or even completely replace the built-in software renderer.

docs/porting/indev.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/indev.md
 ```
 # Input device interface
 

docs/porting/index.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/index.md
 ```
 
 # Porting

docs/porting/log.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/log.md
 ```
 # Logging
 

docs/porting/os.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/os.md
 ```
 # Operating system and interrupts
 

docs/porting/project.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/project.md
 ```
 
 # Set up a project

docs/porting/sleep.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/sleep.md
 ```
 # Sleep management
 

docs/porting/tick.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/tick.md
 ```
 # Tick interface
 

docs/porting/timer-handler.md

@@ -1,6 +1,4 @@
 ```eval_rst
-.. include:: /header.rst
-:github_url: |github_link_base|/porting/timer-handler.md
 ```
 # Timer Handler