fix(my-joy-beta): pluralize 'pair' when appropriate

packages/my-joy-beta/src/containers/instances/metadata.js

@@ -70,7 +70,7 @@ export const Metadata = ({
 
   const _count = !_loading ? (
     <Margin bottom={4} top={addOpen && 4}>
-      <H3>{metadata.length} key:value pair</H3>
+      <H3>{metadata.length} key:value pair{metadata.length === 1 ? '' : 's'}</H3>
     </Margin>
   ) : null;
 

packages/ui-toolkit/src/tags/item.js

@@ -5,7 +5,7 @@ import is from 'styled-is';
 export default styled.li`
   border: ${remcalc(1)} solid ${props => props.theme.grey};
   box-sizing: border-box;
-  border-radius: ${remcalc(2)};
+  border-radius: ${remcalc(3)};
   font-size: ${remcalc(13)};
   padding: ${remcalc(6)} ${remcalc(12)};
   display: flex;