fixed syntax error in pt100 page

docs/tutorials/extras/pt100.md

@@ -2,7 +2,7 @@
 
 The EasyPiezi (Rev 1.1.x and Rev 2.x.x) utilize an extra amp channel to allow the use of a PT100 RTD Thermal sensor with minimal additional components. The circuit is based on E3D's daughterboard designed for PT100 sensors.
 
-![](../assets/schematics/PT100-Schematic.jpg)
+![PT100-Schematic](../../assets/images/schematics/PT100-Schematic.jpg)
 
 The circuit outputs a DC voltage that corresponds to the RTD's change in resistance, which in turn changes based on the temperature of the RTD. This output shares a common ground with other parts of the circuit, so only one additonal output pin is required to utilize it.