fixing notebook

Author: dbickson

examples/quick-dataset-analysis.ipynb

@@ -274,7 +274,7 @@
        "  <thead>\n",
        "    <tr style=\"text-align: right;\">\n",
        "      <th></th>\n",
-       "      <th>img_filename</th>\n",
+       "      <th>filename</th>\n",
        "      <th>fastdup_id</th>\n",
        "      <th>error_code</th>\n",
        "      <th>is_valid</th>\n",
@@ -328,7 +328,7 @@
        "</div>"
       ],
       "text/plain": [
-       "           img_filename  fastdup_id            error_code  is_valid\n",
+       "           filename  fastdup_id            error_code  is_valid\n",
        "0     Abyssinian_34.jpg         135  ERROR_ZERO_SIZE_FILE     False\n",
        "1  Egyptian_Mau_139.jpg        2240  ERROR_ZERO_SIZE_FILE     False\n",
        "2  Egyptian_Mau_145.jpg        2247  ERROR_ZERO_SIZE_FILE     False\n",