Updates: workshop pages (#3956)

* langchain workshop meta image

* Update langchain workshop's presenters

* cicd for aws workshop meta image

* add meta image to cicd workshop

* Correcting a tag from article

* langchain workshop - engin

* Update engin's langchain workshop

themes/default/content/blog/devops-ai-developer-future--pulumi-user-group-tech-talks/index.md

@@ -38,7 +38,7 @@ tags:
     - ai
     - ml
     - community
-    - platform_engineering
+    - platform-engineering
 
 # See the blogging docs at https://github.com/pulumi/pulumi-hugo/blob/master/BLOGGING.md
 # for details, and please remove these comments before submitting for review.

themes/default/content/resources/cicd-for-aws-with-pulumi-and-github-actions/index.md

@@ -2,7 +2,7 @@
 # Name of the webinar.
 title: Get started with CI/CD for AWS using Pulumi & GitHub Actions
 meta_desc: In this workshop, you will learn the fundamentals of an infrastructure CI/CD pipeline through guided exercises using Pulumi.
-meta_image: 
+meta_image: "/images/resources/cicd-aws-github-actions-diana.png"
 
 # A featured webinar will display first in the list.
 featured: false

themes/default/content/resources/deploying-langchain-applications-on-aws-with-pulumi/index.md

@@ -2,7 +2,7 @@
 # Name of the webinar.
 title: Deploying LangChain Applications on AWS with Pulumi
 meta_desc: This workshop will show a practical AI use case for Pulumi. Using Pulumi & TypeScript, we'll demonstrate deploying a LangChain/LangServe app on AWS.
-meta_image: 
+meta_image: "/images/resources/deploy-langchain-apps-aws-kat-lance.png"
 
 # A featured webinar will display first in the list.
 featured: false
@@ -68,10 +68,10 @@ main:
 
     # The webinar presenters
     presenters:
-        - name: Scott Lowe
-          role: Principal Technical Content Engineer, Pulumi
         - name: Kat Morgan
           role: Sr. Community Engineer, Pulumi
+        - name: Lance Martin
+          role: Software Engineer, LangChain
 
     # A bullet point list containing what the user will learn during the webinar.
     learn:

themes/default/content/resources/deploying-langchain-apps-on-aws-with-pulumi/index.md

@@ -2,7 +2,7 @@
 # Name of the webinar.
 title: Deploying LangChain Applications on AWS with Pulumi
 meta_desc: This workshop will show a practical AI use case for Pulumi. Using Pulumi & TypeScript, we'll demonstrate deploying a LangChain/LangServe app on AWS.
-meta_image: 
+meta_image: "/images/resources/deploy-langchain-apps-aws-engin-lance.png"
 
 # A featured webinar will display first in the list.
 featured: false
@@ -70,6 +70,8 @@ main:
     presenters:
         - name: Engin Diri
           role: Sr. Solutions Architect, Pulumi
+        - name: Lance Martin
+          role: Software Engineer, LangChain
 
     # A bullet point list containing what the user will learn during the webinar.
     learn: