Try using smart quotes

docs/tutorials/unit_conversion.ipynb

@@ -86,7 +86,7 @@
    "source": [
     "## 1. Use the default pint unit conversion\n",
     "\n",
-    "As a first step, we illustrate unit conversion between \"standard formats\",\n",
+    "As a first step, we illustrate unit conversion between “standard formats”,\n",
     "i.e., units that **pint** knows by default.\n",
     "\n",
     "In this particular case, we convert exajoule to petawatthours, `EJ/yr -> PWh/yr`.\n",
@@ -175,12 +175,12 @@
    "source": [
     "## 4. Use contexts to specify conversion metrics\n",
     "\n",
-    "There are unit conversions where no \"default\" factor exists.\n",
+    "There are unit conversions where no “default” factor exists.\n",
     "One such case is calculating the CO2-equivalent of CH4 emissions (or other greenhouse gases),\n",
-    "because the conversion depends on the species' \"global warming potential\"\n",
+    "because the conversion depends on the species' “global warming potential”\n",
     "and estimates for that potential are updated regularly in the literature.\n",
     "\n",
-    "To facilitate such use cases, **pint** provides \"contexts\" to allow specifying the appropriate metric.\n",
+    "To facilitate such use cases, **pint** provides “contexts” to allow specifying the appropriate metric.\n",
     "The [IAMconsortium/units](https://github.com/IAMconsortium/units) parametrizes multiple contexts\n",
     "for the conversion of greenhouse gases;\n",
     "see the [emissions module](https://github.com/IAMconsortium/units/blob/master/modules/emissions) for details.\n",
@@ -274,7 +274,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -288,9 +288,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.3"
+   "version": "3.10.0"
   }
  },
  "nbformat": 4,
  "nbformat_minor": 2
-}
+}