Update Microcks self-assessment.md

chore: typo correction: 
Update Ecosystem image description replace actions with ecosystem

Signed-off-by: Yacine Kheddache <yacine@microcks.io>

Author: yada

community/assessments/projects/microcks/self-assessment.md

@@ -250,7 +250,7 @@ We have also created a guide titled "[Joining Microcks Community Meetings](https
 #### Ecosystem
 
 See, the big picture:
-  ![Microcks actions](images/microcks-cloud-native-ecosystem.png)
+  ![Microcks ecosystem](images/microcks-cloud-native-ecosystem.png)
 
 More details: