Update docs for base64 filters

Author: ashishajr

docs/filters.md

@@ -67,7 +67,7 @@ Decode a base 64 encoded string into bytes.
 GET https://example.org/api
 HTTP 200
 [Asserts]
-jsonpath "$.token" base64Decode == hex,e4bda0e5a5bde4b896e7958c;
+jsonpath "$.token" base64Decode == hex,3c3c3f3f3f3e3e;
 ```
 
 ### base64Encode
@@ -78,7 +78,29 @@ Encode bytes into base 64 encoded string.
 GET https://example.org/api
 HTTP 200
 [Asserts]
-bytes base64Encode == "5L2g5aW95LiW55WM"
+bytes base64Encode == "PDw/Pz8+Pg=="
+```
+
+### base64UrlSafeDecode
+
+Decode a base 64 encoded string without padding into bytes.
+
+```hurl
+GET https://example.org/api
+HTTP 200
+[Asserts]
+jsonpath "$.token" base64UrlSafeDecode == hex,3c3c3f3f3f3e3e;
+```
+
+### base64UrlSafeEncode
+
+Encode bytes into url safe base 64 encoded string without padding.
+
+```hurl
+GET https://example.org/api
+HTTP 200
+[Asserts]
+bytes base64UrlSafeEncode == "PDw_Pz8-Pg"
 ```
 
 ### count