Fix typo in pathology tutorials (Project-MONAI#1697)

Fix the typo in pathology tutorials

### Checks
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [ ] Avoid including large-size files in the PR.
- [ ] Clean up long text outputs from code cells in the notebook.
- [ ] For security purposes, please check the contents and remove any
sensitive info such as user names and private key.
- [ ] Ensure (1) hyperlinks and markdown anchors are working (2) use
relative paths for tutorial repo files (3) put figure and graphs in the
`./figure` folder
- [ ] Notebook runs automatically `./runner.sh -t <path to .ipynb file>`

---------

Signed-off-by: YunLiu <55491388+KumoLiu@users.noreply.github.com>

pathology/nuclick/nuclei_classification_infer.ipynb

@@ -20,7 +20,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Nuclei Classification for Pathology\n",
+    "# Nuclei: Classification for Pathology\n",
     "\n",
     "### Inference Notebook\n",
     "It makes use of pretrained weights for the model from MONAI Bundle for Nuclei Classification.  However if you have trained model, you can use the same instead."

pathology/nuclick/nuclei_classification_training_notebook.ipynb

@@ -21,7 +21,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Nuclei:Classification for Pathology\n",
+    "# Nuclei: Classification for Pathology\n",
     "\n",
     "### Training Notebook\n",
     "\n",
@@ -125,7 +125,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Configure Workspace Path\n",
+    "## Configure workspace path\n",
     "\n",
     "Specify the workspace path where the data, models etc.. will be saved.\n",
     "\n"
@@ -145,7 +145,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Configure Workspace Path\n",
+    "## Configure the dataset path and visualize a sample image\n",
     "The datasets used in the examples are from [CoNSeP](https://warwick.ac.uk/fac/cross_fac/tia/data/HoVerNet/). Each user is responsible for checking the content of datasets and the applicable licenses and determining if suitable for the intended use."
    ]
   },

pathology/nuclick/nuclick_infer.ipynb

@@ -15,7 +15,7 @@
     "See the License for the specific language governing permissions and  \n",
     "limitations under the License.\n",
     "\n",
-    "# NuClick:Interactive Annotation for Pathology\n",
+    "# NuClick: Interactive Annotation for Pathology\n",
     "\n",
     "### Inference Notebook\n",
     "It makes use of pretrained weights for the model from MONAI Bundle for NuClick.  However if you have trained model, you can use the same instead."

pathology/nuclick/nuclick_training_notebook.ipynb

@@ -20,7 +20,7 @@
     "See the License for the specific language governing permissions and  \n",
     "limitations under the License.\n",
     "\n",
-    "# NuClick:Interactive Annotation for Pathology\n",
+    "# NuClick: Interactive Annotation for Pathology\n",
     "\n",
     "### Training Notebook\n",
     "\n",
@@ -126,7 +126,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Configure Workspace Path\n",
+    "## Configure workspace path\n",
     "\n",
     "Specify the workspace path where the data, models etc.. will be saved.\n",
     "\n"
@@ -146,7 +146,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "## Configure Workspace Path\n",
+    "## Configure the dataset path and visualize a sample image\n",
     "The datasets used in the examples are from [CoNSeP](https://warwick.ac.uk/fac/cross_fac/tia/data/HoVerNet/). Each user is responsible for checking the content of datasets and the applicable licenses and determining if suitable for the intended use."
    ]
   },