docs: fix docs for get token URL

[congminh1254]

Closes: #1574

[coveralls]

Pull Request Test Coverage Report for Build #5663

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 15 unchanged lines in 9 files lost coverage.
• Overall coverage decreased (-0.008%) to 13.292%

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Files with Coverage Reduction	New Missed Lines	%
src/main/java/com/box/sdkgen/box/errors/RequestInfo.java	1	0.0%
src/main/java/com/box/sdkgen/box/errors/ResponseInfo.java	1	0.0%
src/main/java/com/box/sdkgen/client/BoxClient.java	1	0.0%
src/main/java/com/box/sdkgen/networking/retries/BoxRetryStrategy.java	1	0.0%
src/main/java/com/box/sdk/RealtimeServerConnection.java	1	77.78%
src/main/java/com/box/sdkgen/box/eventstream/EventStreamIterator.java	2	0.0%
src/main/java/com/box/sdkgen/box/jwtauth/JWTConfig.java	2	0.0%
src/main/java/com/box/sdkgen/networking/boxnetworkclient/BoxNetworkClient.java	3	0.0%
src/main/java/com/box/sdkgen/networking/defaultnetworkclient/DefaultNetworkClient.java	3	0.0%

Totals
Change from base Build #5655:	-0.008%
Covered Lines:	8368
Relevant Lines:	62957

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💛 - Coveralls