Update current-fees.mdx (#637)

* Update current-fees.mdx

add opbnb

* pretty

---------

Co-authored-by: Aditya Arora <[email protected]>

Author: KemarTiti

pages/price-feeds/current-fees.mdx

@@ -18,6 +18,7 @@ Please note the fees shown below is the amount paid in `msg.value` per price fee
 | Conflux     | 0.1 **CFX**      |
 | Cronos      | 0.06 **CRO**     |
 | Meter       | 0.02 **MTR**     |
+| opBNB       | 0.000186 **BNB** |
 | Ronin       | 0.001 **RON**    |
 | Sei         | 0.01 **SEI**     |
 | Shimmer     | 1 **SMR**        |