Update quick_start.md

Author: masoudzp

docs/quick_start.md

@@ -34,7 +34,7 @@
 ## Quick Start Guide
 
 
-The easiest way to start is through the PorPy following Jupiter Notebook examples. 
+The easiest way to start is through the PorPy following Jupiter Notebook examples:
 
 | Example File                          	                                                                                                                          | Description                                                                                                                                                           	                                                                          |
 |------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
@@ -48,4 +48,4 @@ The easiest way to start is through the PorPy following Jupiter Notebook example
 | [imrt_dose_prediction.ipynb](https://github.com/PortPy-Project/PortPy/blob/master/examples/imrt_dose_prediction.ipynb)            	                              | Predicts 3D dose distribution using deep learning and converts it into a deliverable IMRT plan                                                                        	                                                                          |
 | [vmat_global_optimal.ipynb](https://github.com/PortPy-Project/PortPy/blob/master/examples/vmat_global_optimal.ipynb)           	                                 | Finds a globally optimal VMAT plan                                                                                                                                    	                                                                          |
 | [beam_orientation_global_optimal.ipynb](https://github.com/PortPy-Project/PortPy/blob/master/examples/beam_orientation_global_optimal.ipynb) 	                   | Finds globally optimal beam angles for IMRT                                                                                                                           	                                                                          |
-| [dvh_constraint_global_optimal.ipynb](https://github.com/PortPy-Project/PortPy/blob/master/examples/dvh_constraint_global_optimal.ipynb)  	                      | Finds a globally optimal plan meeting Dose Volume Histogram (DVH) constraints                                                                                         	                                                                          |
+| [dvh_constraint_global_optimal.ipynb](https://github.com/PortPy-Project/PortPy/blob/master/examples/dvh_constraint_global_optimal.ipynb)  	                      | Finds a globally optimal plan meeting Dose Volume Histogram (DVH) constraints                                                                                         	                                                                          |