Update src/auxiliary/math.jl

Co-authored-by: Hendrik Ranocha <[email protected]>

src/auxiliary/math.jl

@@ -17,7 +17,7 @@ Alternatively, you can set `type` to `"sqrt_Base"` to use the Julia built-in `sq
 which provides a stack-trace of the error which might come in handy when debugging code.
 """
 function set_sqrt_type(type; force = true)
-    @assert type == "sqrt_Trixi_NaN"||type == "sqrt_Base" "Only allowed `sqrt` function types are `\"sqrt_Trixi_NaN\"` and `\"sqrt_Base`\""
+    @assert type == "sqrt_Trixi_NaN"||type == "sqrt_Base" "Only allowed `sqrt` function types are `\"sqrt_Trixi_NaN\"` and `\"sqrt_Base\"`"
     set_preferences!(TRIXI_UUID, "sqrt" => type, force = force)
     @info "Please restart Julia and reload Trixi.jl for the `sqrt` computation change to take effect"
 end