sets: drop permalink

Jekyll will automatically figure out the url from the file path so we
don't need to manually specify the permalink in every file.

Also requires renaming the files to index.md to make it work correctly.

sets/boost/creative-toolbox/auto-builder/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/creative-toolbox/auto-builder/
 title: "LEGO Boost Auto Builder"
 maintainer:
     user: "pybricks"

sets/boost/creative-toolbox/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/creative-toolbox/
 title: "17101: Creative Toolbox"
 image:
     local: "creative-toolbox.jpg"

sets/boost/droid-commander/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/droid-commander/
 title: "75253: Star Wars™ BOOST Droid Commander"
 image:
     local: "droid-commander.jpg"

sets/boost/droid-commander/r2-d2/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/droid-commander/r2-d2/
 title: "LEGO® Star Wars™ BOOST Droid Commander R2-D2"
 maintainer:
     user: "pybricks"

sets/boost/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/boost/
 title: "LEGO BOOST"
 layout: theme
 description: "Theme description"

sets/city/60198-cargo-train/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/60198-cargo-train/
 title: "Cargo train"
 image:
     local: "60198-cargo-train.jpg"

sets/city/60198-cargo-train/slope-detection/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/60198-cargo-train/slope-detection/
 title: "Train slope detection"
 maintainer:
     user: "pybricks"

sets/city/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/city/
 title: "LEGO City"
 layout: theme
 description: "Theme description"

sets/mindstorms/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/
 title: "LEGO MINDSTORMS"
 layout: theme
 description: "Theme description"

sets/mindstorms/robot-inventor/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/robot-inventor/
 title: "51515: Robot Inventor"
 image:
     local: "robot-inventor.jpg"

sets/mindstorms/robot-inventor/steerbot/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/mindstorms/robot-inventor/steerbot/
 title: "Steer Bot"
 maintainer:
     user: "GusJansson"

sets/spike/prime/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/spike/
 title: "LEGO Education SPIKE"
 layout: theme
 description: "Theme description"

sets/technic/42099-off-roader/driving/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/driving/
 title: "42099: Technic Off-Roader: Driving"
 maintainer:
     user: "pybricks"

sets/technic/42099-off-roader/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/
 title: "42099: 4X4 X-treme Off-Roader"
 image:
     local: "42099-off-roader.jpg"

sets/technic/42099-off-roader/keyboard-remote/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/keyboard-remote/
 title: "42099: Technic Off-Roader: Keyboard Remote"
 maintainer:
     user: "pybricks"
@@ -18,7 +17,7 @@ Your MicroPython programs can produce *output* using the `print` command, but
 it can also read *input*. To enter input, just click on the terminal window
 and press some keys.
 
-![](/_pages/projects/sets/technic/42099-off-roader/keyboard-remote/terminalwindow.png)
+![](./terminalwindow.png)
 
 You can read keyboard presses using `stdin`, as shown in the example below.
 Then you can make your program choose different behaviors based on which key

sets/technic/42099-off-roader/obstacle-avoidance/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/42099-off-roader/obstacle-avoidance/
 title: "42099: Technic Off-Roader: Obstacle Avoidance"
 maintainer:
     user: "pybricks"

sets/technic/index.md

@@ -1,5 +1,4 @@
 ---
-permalink: /projects/sets/technic/
 title: "LEGO Technic"
 layout: theme
 description: "Theme description"