[[Speed] Update run-speed-test.mdx

Hello team, 

Can we improve the design of this Quota's section?

https://developers.cloudflare.com/speed/observatory/run-speed-test/#quotas

Author: nenizera

src/content/docs/speed/observatory/run-speed-test.mdx

@@ -43,7 +43,7 @@ RUM uses a lightweight JavaScript beacon to collect the information Observatory
 
 ## Quotas
 
-Quota limits for the number of tests you can run per month are currently the following:
+*Quota limits for the number of tests you can run per month are currently the following:
 
 <table border="1" cellpadding="8" cellspacing="0" style="border-collapse: collapse; width:100%; text-align:center;">
   <thead style="background-color:#f5f5f5;">