Fixes typos in the search.ipynb (aimacode#307)

Author: chinmayapancholi13

search.ipynb

@@ -28,9 +28,9 @@
    "source": [
     "## Review\n",
     "\n",
-    "Here, we learn about problem solving. Building goal-based agents that can plan ahead to solve problems, in particular navigation problem / route finding problem. First, we will start the problem solving by precicly defining **problems** and their **solutions**. We will look at several general-purpose search algorithms. Broadly, search algorithms are classified into two types:\n",
+    "Here, we learn about problem solving. Building goal-based agents that can plan ahead to solve problems, in particular navigation problem / route finding problem. First, we will start the problem solving by precisely defining **problems** and their **solutions**. We will look at several general-purpose search algorithms. Broadly, search algorithms are classified into two types:\n",
     "\n",
-    "* **Uninformed search algorithms**: Search algorithms which explores the search space without having any information aboout the problem other than its definition.\n",
+    "* **Uninformed search algorithms**: Search algorithms which explores the search space without having any information about the problem other than its definition.\n",
     "* Examples:\n",
     "    1. Breadth First Search\n",
     "    2. Depth First Search\n",
@@ -96,7 +96,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "We will use the abstract class `Problem` to define out real **problem** named `GraphProblem`. You can see how we defing `GraphProblem` by running the next cell."
+    "We will use the abstract class `Problem` to define our real **problem** named `GraphProblem`. You can see how we defing `GraphProblem` by running the next cell."
    ]
   },
   {
@@ -156,7 +156,7 @@
     "collapsed": true
    },
    "source": [
-    "It is pretty straight forward to understand this `romania_map`. The first node **Arad** has three neighbours named **Zerind**, **Sibiu**, **Timisoara**. Each of these nodes are 75, 140, 118 units apart from **Arad** respectively. And the same goes with other nodes.\n",
+    "It is pretty straightforward to understand this `romania_map`. The first node **Arad** has three neighbours named **Zerind**, **Sibiu**, **Timisoara**. Each of these nodes are 75, 140, 118 units apart from **Arad** respectively. And the same goes with other nodes.\n",
     "\n",
     "And `romania_map.locations` contains the positions of each of the nodes. We will use the straight line distance (which is different from the one provided in `romania_map`) between two cities in algorithms like A\\*-search and Recursive Best First Search.\n",
     "\n",
@@ -392,7 +392,7 @@
     "* Currently exploring node - <font color='red'>red</font>\n",
     "* Already explored nodes - <font color='gray'>gray</font>\n",
     "\n",
-    "Now, we will define some helper methods to display interactive buttons ans sliders when visualising search algorithms."
+    "Now, we will define some helper methods to display interactive buttons and sliders when visualising search algorithms."
    ]
   },
   {