Fix typo.

Author: vrettasm

examples/osyczka_kundu_multiobjective.ipynb

@@ -28,7 +28,7 @@
     "      C_{2}\\left(\\mathbf{x}\\right) = (6 - x_1 − x_2) \\geq 0, \\\\\n",
     "      C_{3}\\left(\\mathbf{x}\\right) = (2 - x_2 + x_1) \\geq 0, \\\\\n",
     "      C_{4}\\left(\\mathbf{x}\\right) = (2 − x_1 + 3x_2) \\geq 0, \\\\\n",
-    "      C_{5}\\left(\\mathbf{x}\\right) = (4 − (x_3 − 3)2 − x_4) \\geq 0, \\\\\n",
+    "      C_{5}\\left(\\mathbf{x}\\right) = (4 − (x_3 − 3)^2 − x_4) \\geq 0, \\\\\n",
     "      C_{6}\\left(\\mathbf{x}\\right) = ((x_5 − 3)^2 + x_6−4) \\geq 0, \\\\\n",
     "\\end{cases}\n",
     "\n",