Merge pull request #42 from Swanson-Hysell/patch-1

fix small typo in comment

Author: jrjohansson

Lecture-1-Introduction-to-Python-Programming.ipynb

@@ -1392,7 +1392,7 @@
     }
    ],
    "source": [
-    "# replace a substring in a string with somethign else\n",
+    "# replace a substring in a string with something else\n",
     "s2 = s.replace(\"world\", \"test\")\n",
     "print(s2)"
    ]