Merge pull request CamDavidsonPilon#123 from JensRantil/minor-comment-fix

Correct comment on what code actually does

Author: CamDavidsonPilon

Chapter1_Introduction/Chapter1_Introduction.ipynb

@@ -652,7 +652,7 @@
       "def lambda_(tau=tau, lambda_1=lambda_1, lambda_2=lambda_2):\n",
       "    out = np.zeros(n_count_data)\n",
       "    out[:tau] = lambda_1  # lambda before tau is lambda1\n",
-      "    out[tau:] = lambda_2  # lambda after tau is lambda2\n",
+      "    out[tau:] = lambda_2  # lambda after (and including) tau is lambda2\n",
       "    return out"
      ],
      "language": "python",