Updating the language from "Sandbox" to "Developer Account"

Author: InbarGazit

public/locales/en/About.json

@@ -4,8 +4,8 @@
   "SourceButton": "Source on GitHub",
   "GitHubLink": " https://github.com/docusign/MySureSampleApp/",
   "SandboxText": "<h4>Get started with the DocuSign API today</h4>",
-  "SandboxButton": "Create Sandbox",
-  "Description2": "<p><br></br>With a developer sandbox account, you can test our APIs for free! Sandbox accounts do not expire and have Enterprise-level features enabled.</p>",
+  "SandboxButton": "Create Developer Account",
+  "Description2": "<p><br></br>With a developer developer account, you can test our APIs for free! Developer accounts do not expire and have Enterprise-level features enabled.</p>",
   "Features": "<h3>MySure features:</h3><ul><li>Send document for signature</li><li>Send from template</li><li>Embedded signing</li><li>Forms and form-field data</li><li>Real-time status</li><li>Custom branding</li><li>Document visibility</li><li>Signer attachment tabs</li><li>Calculated (formula) fields</li><li>Downloadable documents and audit trails</li></ul>",
   "ToolsandLinks": "API Tools and Links",
   "DeveloperCenter": "Developer Center",

public/locales/en/Home.json

@@ -3,7 +3,7 @@
   "Header2": "Self-Service Insurance Portal",
   "Footer1": "DocuSign: It's time to agree better",
   "Footer2": "<p>DocuSign helps organizations connect and automate how they prepare, sign, act on, and manage agreements.</p>",
-  "SandBoxButton": "Create Sandbox",
+  "SandBoxButton": "Create Developer Account",
   "LearnMoreButton": "Learn More",
   "Card1": {
     "Title": "Submit a Claim",

public/locales/en/SigningComplete.json

@@ -4,8 +4,8 @@
   "BackLink": "Back to Home",
   "StatusLink": "View My Submissions",
   "SandboxText": "<h4>Get Started with the DocuSign APIs Today</h4>",
-  "SandboxButton": "Get Your Sandbox",
-  "Description": "<p>  <br></br>With a developer sandbox, you can test our APIs for free. Sandbox accounts do not expire and have enterprise-level features enabled.</p>",
+  "SandboxButton": "Get Your Developer Account",
+  "Description": "<p>  <br></br>With a developer account, you can test our APIs for free. Developer accounts do not expire and have enterprise-level features enabled.</p>",
   "SigningReturnEvents": "Possible signing return events:",
   "LearnAbout": "Learn more about embedded signing",
   "SigningCompleteEvent": {