Repository: bitcoin/bitcoin (language: cpp)

Issue:
Improve the bitcoin.conf instructions in init.md doc
Update the `init.md` instructions about  generating an example `bitcoin.conf` file.

~~Additionally, the `share/examples/bitcoin.conf` placeholder file says to follow the instructions in `contrib/devtools/README.md`, which was confusing to me since that README talks about many scripts. It would be helpful to point out to the user which section to refer to.~~ (EDIT: removed this change from the PR.)

This issue includes an accompanying PR #30154.

## Background

- Two years ago, `share/examples/bitcoin.conf` was replaced with [a placeholder file](https://github.com/bitcoin/bitcoin/commit/b483084d866c16d97a34251ae652bac94f85f61d). To see an example `bitcoin.conf`, the user now runs the `contrib/devtools/gen-bitcoin-conf.sh` script, which replaces the placeholder file with the parsed contents of `bitcoind --help`.

- The instructions in `init.md` about an example `bitcoin.conf` haven't changed significantly since they were [added almost 10 years ago](https://github.com/bitcoin/bitcoin/blame/234bfbf6a5fcba37e510e9cb6c1f2a629cd0290e/doc/init.md#L39).



Discussion / hints:

Fix patch:
diff --git a/doc/init.md b/doc/init.md
index 7f7902771802e..64ab971557ea4 100644
--- a/doc/init.md
+++ b/doc/init.md
@@ -43,8 +43,8 @@ This allows for running bitcoind without having to do any manual configuration.
 `conf`, `pid`, and `wallet` accept relative paths which are interpreted as
 relative to the data directory. `wallet` *only* supports relative paths.
 
-For an example configuration file that describes the configuration settings,
-see `share/examples/bitcoin.conf`.
+To generate an example configuration file that describes the configuration settings,
+see [contrib/devtools/README.md](../contrib/devtools/README.md#gen-bitcoin-confsh).
 
 Paths
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Test patch: