Document defaultBlock in methods.myMethod.call

[Velenir]

Description

methods.myMethod.call documentation doesn't mention defaultBlock parameter, but it works as expected.

I mostly copied description from eth.call

Type of change

Documentation change

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran npm run dtslint with success and extended the tests and types if necessary.
• I ran npm run test:unit with success.
• I ran npm run test:cov and my test cases cover all the lines and branches of the added code.
• I ran npm run build-all and tested the resulting files from dist folder in a browser.
• I have updated the CHANGELOG.md file in the root folder.
• I have tested my code on the live network.
• The browser visual inspection check looks ok: sudden-playground.surge.sh

[coveralls]

Coverage remained the same at 89.738% when pulling 2943f6b on Velenir:patch-1 into e1ba5d5 on ethereum:1.x.

[cgewecke]

Oh great! Thanks so much.