Update pipeline summary with required packages and YAML example

Author: htahir1

pipelines/tagged_pipeline/summary.md

@@ -1 +1,3 @@
-Demonstrates how to organize and categorize pipeline runs using tags 
+Demonstrates how to organize and categorize pipeline runs using tags
+
+Requirements: `pip install pandas` 

pipelines/viz_pipeline/summary.md

@@ -1 +1,3 @@
-Shows how to create automatic and custom visualizations for pipeline data 
+Shows how to create automatic and custom visualizations for pipeline data
+
+Requirements: `pip install matplotlib pandas scikit-learn` 

pipelines/yaml_pipeline/summary.md

@@ -1 +1,7 @@
-Demonstrates how to separate configuration from code using YAML configuration files 
+Demonstrates how to separate configuration from code using YAML configuration files
+
+Requirements: Create a `my_run.yaml` file with:
+```yaml
+parameters:
+  name: "ZenML Community 👋"
+```