## Proposed Changes
Address a few shortcomings of the book noticed by users:
- Remove description of redundant execution nodes
- Use an Infura eth1 node rather than an eth2 node in the merge migration example
- Add an example of the fee recipient address format (we support addresses without the 0x prefix, but 0x prefixed feels more canonical).
- Clarify that Windows support is no longer beta
- Add a link to the MSRV to the build-from-source instructions
## Issue Addressed
https://github.com/sigp/lighthouse/issues/2889
## Additional Info
I have checked that linkcheck has succeeded on the book built locally. 👌
```shell
$ cd book
$ mdbook serve --open
...
2022-01-14 01:13:40 [INFO] (mdbook::book): Book building has started
2022-01-14 01:13:40 [INFO] (mdbook::book): Running the html backend
$ linkcheck http://localhost:3000
Perfect. Checked 4495 links, 80 destination URLs (76 ignored).
```
Also I'll tackle running linkcheck on CI in another pull request.
## Issue Addressed
Resolves#2563
Replacement for #2653 as I'm not able to reopen that PR after force pushing.
## Proposed Changes
Fixes all broken api links. Cherry picked changes in #2590 and updated a few more links.
Co-authored-by: Mason Stallmo <masonstallmo@gmail.com>
Replace all --process-all-attestations with --import-all-attestations
## Issue Addressed
Which issue # does this PR address?
## Proposed Changes
Please list or describe the changes introduced by this PR.
## Additional Info
Please provide any additional information. For example, future considerations
or information useful for reviewers.
