fix: warning emitted from astropy.votable due to blank spaces in name

examples/04_Importing_Tables.ipynb

@@ -87,7 +87,7 @@
     "t = QTable(\n",
     "    [ra, dec, name, parallax],\n",
     "    names=(\"ra\", \"dec\", \"name\", \"parallax\"),\n",
-    "    meta={\"name\": \"my sample table\"},\n",
+    "    meta={\"name\": \"my_sample_table\"},\n",
     ")"
    ]
   },
@@ -101,43 +101,7 @@
    ]
   }
  ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "base",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.11.3"
-  },
-  "toc": {
-   "base_numbering": 1,
-   "nav_menu": {},
-   "number_sections": false,
-   "sideBar": false,
-   "skip_h1_title": false,
-   "title_cell": "Table of Contents",
-   "title_sidebar": "Contents",
-   "toc_cell": false,
-   "toc_position": {},
-   "toc_section_display": false,
-   "toc_window_display": false
-  },
-  "vscode": {
-   "interpreter": {
-    "hash": "85bb43f988bdbdc027a50b6d744a62eda8a76617af1f4f9b115d38242716dbac"
-   }
-  }
- },
+ "metadata": {},
  "nbformat": 4,
  "nbformat_minor": 4
 }