Update index.md

docs/index.md

@@ -69,6 +69,7 @@ Please mind the **search field** in the header as well as the icon in the header
     - Thanks to **[I_Sells_Drugs](https://www.reddit.com/user/I_Sells_Drugs/)** for taking pictures of his sheared off heatbreak!
     - Thanks to **[Island-Strange](https://www.reddit.com/user/Island-Strange/)** for taking a picture of his shortcut bed!  
     - Thanks to **[Jaximus](https://www.reddit.com/user/Jaximus)** for allowing me to use the picture of the slipped out cartridge heater!  
+    - Thanks to **[JD154](https://github.com/JD154)** for the pics of and notes about the aluminum belt tensioners!  
     - Thanks to **[jokubasver](https://github.com/jokubasver)** for taking that screenshot of the config settings for compiling the klipper.bin and for allowing me to use his picture of the stock control unit being used for KlipperScreen!  
     - Thanks to **[MeckeMecke](https://www.reddit.com/user/MeckeMecke/)** for allowing me to use the picture of his direct drive mod for the Go using a Revo CR an an Orbiter V.2!
     - Thanks to **[mowerheimen](https://www.reddit.com/user/mowerheimen)** for allowing me to use the picture of the crooked x-axis gantry!