Fix Figma docs

Author: taysea

aries-site/src/examples/tokens/TokenTypes.js

@@ -131,10 +131,7 @@ export const TokenTypes = () => {
           <Box pad="large" round="small" flex={false} elevation="medium" />
         </TokenPreview>
       </TypePreview>
-      <TypePreview
-        title="Border width"
-        description="Not currently supported by Figma"
-      >
+      <TypePreview title="Border width" description="Apply to Stroke styles">
         <TokenPreview token="borderWidth.small">
           <Box
             height="xsmall"

aries-site/src/pages/design-tokens/using-design-tokens-in-figma.mdx

@@ -17,7 +17,7 @@ As variables:
 - Spacing
 - Size
 - Radius
-- BorderWidth (currently not supported by Figma)
+- Border width
 
 As styles: