Fixed what I believe are typos

notebooks/GridWorld.ipynb

@@ -196,7 +196,7 @@
     "    reward_states::Vector{GridWorldState} # the states in which agent recieves reward\n",
     "    reward_values::Vector{Float64} # reward values for those states\n",
     "    tprob::Float64 # probability of transitioning to the desired state\n",
-    "    discount_factor::Float64 # disocunt factor\n",
+    "    discount_factor::Float64 # discount factor\n",
     "end"
    ]
   },
@@ -279,7 +279,7 @@
    "source": [
     "function POMDPs.states(mdp::GridWorld)\n",
     "    s = GridWorldState[] # initialize an array of GridWorldStates\n",
-    "    # loop over all our states, remeber there are two binary variables:\n",
+    "    # loop over all our states, remember there are two binary variables:\n",
     "    # done (d)\n",
     "    for d = 0:1, y = 1:mdp.size_y, x = 1:mdp.size_x\n",
     "        push!(s, GridWorldState(x,y,d))\n",
@@ -698,7 +698,7 @@
    "metadata": {},
    "source": [
     "```julia\n",
-    "POMDPs.add(\"DiscreteValueIteration\")\n",
+    "Pkg.add(\"DiscreteValueIteration\")\n",
     "```"
    ]
   },
@@ -804,7 +804,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Remeber that the state (9,3) has an immediate reward of +10.0, so the policy we found is moving up as expected!"
+    "Remember that the state (9,3) has an immediate reward of +10.0, so the policy we found is moving up as expected!"
    ]
   },
   {
@@ -950,7 +950,7 @@
    "metadata": {},
    "source": [
     "```julia\n",
-    "POMDPs.add(\"MCTS\")\n",
+    "Pkg.add(\"MCTS\")\n",
     "```"
    ]
   },