I changed the title from wordwrap to line wrapping since the answer I found called it that. Here's how to set it up to work in Jupyter Notebook, which should also work in your Pro Notebook at the same time.
1) Look for your configuration file
Win Start Menu > ArcGIS > Python Command Prompt > jupyter --config-dir
2) The command prompt should tell you it's in C:\users\youl\.jupyter
C:\users\you\.jupyter > nbconfig > notebook.json > add "lineWrapping": true after "lineNumbers": true,
For example,
{
"Cell": {
"cm_config": {
"lineNumbers": true,
"lineWrapping": true
}
},
"keys": {
"command": {
"unbind": [
"i,i"
],
"bind": {
"ctrl-i": "jupyter-notebook:interrupt-kernel"
}
}
},
"load_extensions": {
"repr_style/main": true
},
"Notebook": {
"Toolbar": true
}
}