mkdocs.yml: Changed Cost Estimation "Methods" to "Design Method" (the title...

mkdocs.yml: Changed Cost Estimation "Methods" to "Design Method" (the title that is shown in the left column of the website)

mkdocs.yml

@@ -283,7 +283,7 @@ nav:                                      # Customizes the main navigation struc
           - Cost Estimation:
             - Introduction: documentation/analysis/cost_estimation/index.md
             - Getting Started: documentation/analysis/cost_estimation/getting_started.md
-            - Methods: documentation/analysis/cost_estimation/operating_cost_method.md
+            - Design Method: documentation/analysis/cost_estimation/operating_cost_method.md
             - Run your First Estimation: documentation/analysis/cost_estimation/run_your_first_cost_estimation.md
             - Software Architecture: documentation/analysis/cost_estimation/software_architecture.md
             # - API Reference: # TODO define for Python