docs(event-grid): Fix typo about encoding

They

Author: loris-s-sonarsource

articles/event-grid/authenticate-with-access-keys-shared-access-signatures.md

@@ -50,7 +50,7 @@ Shared Access Signatures (SAS) provides you with access control over resources w
 
 ## Shared Access Signature token
 
-You can generate a SAS token to be included when your client application communicates with Event Grid. SAS tokens for Event Grid resources are `Base64` encoded strings with the following format: `r={resource}&e={expiration_utc}&s={signature}`.
+You can generate a SAS token to be included when your client application communicates with Event Grid. SAS tokens for Event Grid resources are `URL` encoded strings with the following format: `r={resource}&e={expiration_utc}&s={signature}`.
 
 - `{resource}` is the URL that represents the Event Grid resource the client accesses.
   - The valid URL format for custom topics, domains, and partner namespaces is `https://<yourtopic>.<region>.eventgrid.azure.net/api/events`.
@@ -141,4 +141,4 @@ Authorization: SharedAccessSignature r=https%3a%2f%2fmytopic.eventgrid.azure.net
 
 - [Send events to your custom topic](custom-event-quickstart.md).
 - [Publish events to namespace topics using Java](publish-events-to-namespace-topics-java.md)
-- [Receive events using pull delivery with Java](receive-events-from-namespace-topics-java.md)
+- [Receive events using pull delivery with Java](receive-events-from-namespace-topics-java.md)