Add description tags

Author: javierdlrm

docs/user_guides/mlops/registry/input_example.md

@@ -1,3 +1,7 @@
+---
+description: Documentation on how to attach an input example to a model.
+---
+
 # How To Attach An Input Example
 
 ## Introduction

docs/user_guides/mlops/registry/model_evaluation_images.md

@@ -1,3 +1,7 @@
+---
+description: Documentation on how to attach model evaluation images to a model.
+---
+
 # How To Save Model Evaluation Images
 
 ## Introduction

docs/user_guides/mlops/registry/model_schema.md

@@ -1,3 +1,7 @@
+---
+description: Documentation on how to attach a model schema to a model.
+---
+
 # How To Attach A Model Schema
 
 ## Introduction