fix typo

Author: sukritsingh

notebooks/cookbook/Enhanced sampling approaches.ipynb

@@ -212,7 +212,7 @@
    "source": [
     "For Langevin-AMD, we're effectively adding a boost potential to the simulation. \n",
     "This boosted potential botential takes the form of\\\n",
-    "$V'(r) = V_{0}(r) + \\frac{(E-V(r))^2}{(\\alpha+E-V_0(r))}$ \\ \n",
+    "$V'(r) = V_{0}(r) + \\frac{(E-V(r))^2}{(\\alpha+E-V_0(r))}$ \n",
     "where $V_0(r)$ is the initial potential energy\\\n",
     "and $\\alpha$ and E are hyper parameters defining the potential.\\\n",
     "For further details on values to choose, see Hamelberg et al., J. Chem. Phys. 127, 155102 (2007)."