Update README.md to say Agentforce for Developers (#5874)

Making update to rebrand E4D to Agentforce for Developers

Co-authored-by: Daphne Yang <[email protected]>

packages/salesforcedx-vscode-expanded/README.md

@@ -57,7 +57,7 @@ The Salesforce Extension Pack (Expanded) installs these Salesforce-developed ext
   This extension (`salesforcedx-vscode-soql`) enables you to interactively build a SOQL query via a form-based visual editor, view the query as you build, and save the output to a .csv or .json file.
 - [Salesforce Lightning Design System (SLDS) Validator](https://marketplace.visualstudio.com/items?itemName=salesforce.salesforce-vscode-slds)
   This extension (`salesforcedx-vscode-slds`) simplifies working with the Salesforce Lightning Design System (SLDS). It provides code completion, syntax highlighting, and validation with recommended tokens and utility classes.
-- [Einstein for Developers (Beta)](https://marketplace.visualstudio.com/items?itemName=salesforce.salesforcedx-einstein-gpt) This extension (`salesforcedx-einstein-gpt`) uses generative AI to make Salesforce development in Visual Studio Code richer with features such as natural language to code generation, inline autocompletion for Apex and LWC code, and test case generation for Apex classes.
+- [Agentforce for Developers](https://marketplace.visualstudio.com/items?itemName=salesforce.salesforcedx-einstein-gpt) This extension (`salesforcedx-einstein-gpt`) uses generative AI to make Salesforce development in Visual Studio Code richer with features such as natural language to code generation, inline autocompletion for Apex and LWC code, and test case generation for Apex classes.
 - [Salesforce Code Analyzer](https://marketplace.visualstudio.com/items?itemName=salesforce.sfdx-code-analyzer-vscode) This extension (`sfdx-code-analyzer-vscode`) scans your code using multiple rule engines to produce lists of violations that you can use to improve your code.
 
 It also includes the following community-built extensions.