fix typo

Author: aashishpanta0

hands-on/session III/3.Tutorial_PetascaleAnalysis.ipynb

@@ -5,7 +5,7 @@
    "id": "ff5edf9e-1b2c-4e4f-bbac-70c0d7554e29",
    "metadata": {},
    "source": [
-    "## **Interactive Ocean Data Analysis with NSDF Services - NASDF-OpenVisus**\n",
+    "## **Interactive Ocean Data Analysis with NSDF Services - NSDF-OpenVisus**\n",
     "\n",
     "This notebook provides a step-by-step guide for accessing, visualizing, and analyzing cloud-hosted oceanographic data using the **OpenVisus** framework.  \n",
     "The data comes from the **LLC2160 ocean simulation**, part of the [DYAMOND Visualization Dataset](https://data.nas.nasa.gov/viz/vizdata/DYAMOND_c1440_llc2160/GEOS/index.html), and includes multi-terabyte fields such as salinity, sea-surface temperature, and 3D ocean velocities.\n",
@@ -19,8 +19,8 @@
     "\n",
     "The notebook is structured into clear workflow steps (see figure below), enabling progressive exploration from global patterns to local features.\n",
     "\n",
-    "### 💻 Getting Started Without Codeocean?\n",
-    "To run this notebook without Codeocean, you will need the `OpenVisus` Python library. Install it with:\n",
+    "### 💻 Getting Started Without Codespace?\n",
+    "To run this notebook locally, you will need the `OpenVisus` Python library. Install it with:\n",
     "\n",
     "```bash\n",
     "pip install OpenVisus"