fix link

Author: hexaeder

docs/src/mtk_integration.md

@@ -36,7 +36,7 @@ as tearing of thousands of equations.
 
 ## RC-Circuit Example
 In good [MTK tradition](https://docs.sciml.ai/ModelingToolkit/stable/tutorials/acausal_components/), this feature will be explained along a simple RC circuit example.
-The [Dynamic Flow in simple Gas Network](@ref) example is another showcase of the MTK constructors.
+The [Dynamic Flow in Simple Gas Network](@ref) example is another showcase of the MTK constructors.
 
 The system to model is 2 node, 1 edge network. The node output states are the voltage (to ground), the edge output sates are the currents at both ends.
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