v0.15.19: Liquid staking update, core dev call and update validator keys (#712)

* Add files via upload

* Update 07-24-core-devs-call.md

* fix broken RPC url

* fix all the broken anchors and hyperlinks

* chore: fix some comments (#702)

Signed-off-by: zhoufanjin <shuangcui@live.cn>

* shutterized -> to change to shutter enabled

* fix core dev call layout

* Core Devs Call Notes July 31, 2024

* remove custom signer from interact page

* fix: 07-31-core-devs-call format

* Core Devs Call Notes Aug 7, 2024

* "Liquid Staking" Page Update (#709)

* Update _generate_validator_keys_wagyu.md (#710)

Adding a warning about entering a withdrawal address at the key generation step in Wagyu. This idea comes after seeing multiple validators not paying attention to it recently and ending up having to update their withdrawal credential using Ethdo after which is not really easy for non technical people. This warning should hopefully prevent such cases in the future.

* Update voluntary-exit.md (#711)

Fixing a warning that wasn't really exact, as updating a 0x00 withdrawal credential is also possible on an exited validator as well but is much more challenging because the node is most often offline.

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Signed-off-by: zhoufanjin <shuangcui@live.cn>
Co-authored-by: Armagan Ercan <armaggan@pm.me>
Co-authored-by: Armagan Ercan <armagan.ercan@gnosis.io>
Co-authored-by: zhoufanjin <shuangcui@live.cn>
Co-authored-by: zengzengzenghuy <85567868+zengzengzenghuy@users.noreply.github.com>
Co-authored-by: jackgale.eth <jack.gale@icloud.com>
Co-authored-by: theChim9 <96598599+theChim9@users.noreply.github.com>