Fix token rpc-client methods (bp #11361)

[mergify]

This is an automated backport of pull request #11361 done by Mergify

Cherry-pick of d0144ce has failed:

On branch mergify/bp/v1.2/pr-11361
Your branch is up to date with 'origin/v1.2'.

You are currently cherry-picking commit d0144ce38.
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Changes to be committed:

	modified:   client/src/rpc_client.rs
	modified:   docs/src/apps/jsonrpc-api.md

Unmerged paths:
  (use "git add <file>..." to mark resolution)

	both modified:   core/src/rpc.rs

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[codecov]

Codecov Report

Merging #11362 into v1.2 will increase coverage by 0.0%.
The diff coverage is 55.5%.

@@          Coverage Diff           @@
##            v1.2   #11362   +/-   ##
======================================
  Coverage   82.3%    82.3%           
======================================
  Files        310      310           
  Lines      74445    74456   +11     
======================================
+ Hits       61288    61301   +13     
+ Misses     13157    13155    -2