fix: add missing space in QUBO description

src/pages/solve/QUBO.tsx

@@ -21,7 +21,7 @@ const QUBO: NextPage = () => {
       <Heading as="h1">QUBO Solver</Heading>
       <Text color="text" align="justify">
         In the Quadratic Unconstrained Binary Optimization problem, we try to
-        find the assignment for a finite amount of <Code>0/1</Code>
+        find the assignment for a finite amount of <Code>0/1</Code>{' '}
         decision variables that minimizes a given quadratic term with these
         variables. The problem statement is given in the LP format and all
         solvers will present a variable assigment as a solution.