Fix image link

Fix planetary-computer-explorer.png image link

6-Data-Science-In-Wild/20-Real-World-Examples/assignment.md

@@ -15,7 +15,7 @@ The Explorer interface (shown in the screenshot below) lets you select a dataset
  3. Use the Explorer - pick a dataset of interest, select a relevant query & rendering option.
 
 
-![The Planetary Computer Explorer](images/Planetary-Computer-Explorer.png)
+![The Planetary Computer Explorer](images/planetary-computer-explorer.png)
 
 `Your Task:`
 Now study the visualization that is rendered in the browser and answer the following:
@@ -35,4 +35,4 @@ Apply for an account - and login when accepted.
 
 Exemplary | Adequate | Needs Improvement
 --- | --- | -- |
-All five core questions were answered. The student clearly identified how current and alternative visualizations could provide insights into sustainability objectives or outcomes.| The student answered at least the top 3 questions in great detail, showing that had practical experience with the Explorer. | The student failed to answer multiple questions, or provided insufficient detail - indicating that no meaningful attempt was made for the project |
+All five core questions were answered. The student clearly identified how current and alternative visualizations could provide insights into sustainability objectives or outcomes.| The student answered at least the top 3 questions in great detail, showing that had practical experience with the Explorer. | The student failed to answer multiple questions, or provided insufficient detail - indicating that no meaningful attempt was made for the project |