Minor fixes

src/docs/model.md

@@ -28,7 +28,7 @@ In this page, we describe the precise mathematical optimization model used by RE
 **Products:**
 
 * $\alpha_{pm}$ - Amount of material $m$ recovered by plant $t$ for each tonne of original material (`tonne/tonne`)
-* $m^\text{initial}_{lt}$ - Amount of original material to be recycled at location $l$ during time $t$ (tonne)
+* $m^\text{initial}_{lt}$ - Amount of original material to be recycled at location $l$ during time $t$ (`tonne`)
 
 **Transportation:**
 

src/model.jl

@@ -203,7 +203,7 @@ function solve(instance::Instance;
     if optimizer == nothing
         milp_optimizer = optimizer
         lp_optimizer = optimizer
-    else
+    end
     
     @info "Building graph..."
     graph = RELOG.build_graph(instance)