Revert "Clarify the reference to the name of "tif" images"

This reverts commit 85dd9fc.

Author: kushalbakshi

tutorials/02-Calcium Imaging Imported Tables.ipynb

@@ -57,7 +57,36 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Now we would like to continue working with the tables we defined in the previous notebook. To do so, we would need the classes for each table: `Mouse` and `Session`. We can either redefine it here, but for your convenience, we have included the schema and table class definitions in a package called `tutorial_pipeline.mouse_session`, from which you can import the classes as well as the schema object. We will use the schema object again to define more tables."
+    "## Calcium imaging dataset"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "In the `data` folder in this repository, you will find a small dataset of three different calcium imaging scans:\n",
+    "\n",
+    "- `/workspaces/datajoint-tutorials/data/example_scan_02.tif`\n",
+    "- `/workspaces/datajoint-tutorials/data/example_scan_03.tif`\n",
+    "- `/workspaces/datajoint-tutorials/data/example_scan_01.tif`\n",
+    "\n",
+    "As you might know, calcium imaging scans (raw data) are stored as *.tif* files. \n",
+    "\n",
+    "*NOTE: For this tutorial there is no need to deeply explore this dataset. Nevertheless, if you are curious about visualizing these example scans, we recommend you to open the TIFF with [ImageJ](https://imagej.nih.gov/ij/download.html).*"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## First steps of the pipeline design: Schema, Mouse & Session"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "DataJoint pipelines commonly start with tables for `Mouse` and `Session`. Let's quickly create these tables based on what we learned in the previous session:"
    ]
   },
   {