Fixed broken links in tonstarter.md

Author: coolroman

docs/develop/smart-contracts/sdk/tonstarter.md

@@ -4,7 +4,7 @@
 
 Testing toolkit (usually, sandbox) already included to TypeScript SDK named Blueprint.
 
-- [Read more about Blueprint](develop/smart-contracts/sdk/javascript)
+- [Read more about Blueprint](/develop/smart-contracts/sdk/javascript)
 
 Run tests in one line using:
 

docs/develop/smart-contracts/testing/tonstarter.md

@@ -4,7 +4,7 @@
 
 Testing toolkit (usually, sandbox) already included to TypeScript SDK named Blueprint.
 
-- [Read more about Blueprint](develop/smart-contracts/sdk/javascript)
+- [Read more about Blueprint](/develop/smart-contracts/sdk/javascript)
 
 Run tests in one line using:
 

i18n/mandarin/docusaurus-plugin-content-docs/current/develop/smart-contracts/sdk/tonstarter.md

@@ -4,7 +4,7 @@
 
 测试工具包（通常是沙盒）已包含在名为Blueprint的TypeScript SDK中。
 
-- [了解更多关于Blueprint](develop/smart-contracts/sdk/javascript)
+- [了解更多关于Blueprint](/develop/smart-contracts/sdk/javascript)
 
 使用以下命令一行运行测试：
 

i18n/mandarin/docusaurus-plugin-content-docs/current/develop/smart-contracts/testing/tonstarter.md

@@ -4,7 +4,7 @@
 
 测试工具包（通常是沙盒）已经包含在名为Blueprint的TypeScript SDK中。
 
-- [了解更多关于Blueprint](develop/smart-contracts/sdk/javascript)
+- [了解更多关于Blueprint](/develop/smart-contracts/sdk/javascript)
 
 使用以下命令一行运行测试：