Rollup merge of rust-lang#125318 - GuillaumeGomez:migrate-rustdoc-examples-whitespaces, r=jieyouxu

Migrate `run-make/rustdoc-scrape-examples-whitespace` to `rmake.rs`

Part of rust-lang#121876.

r? `@jieyouxu`

Author: matthiaskrgr

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -236,7 +236,6 @@ run-make/rustc-macro-dep-files/Makefile
 run-make/rustdoc-io-error/Makefile
 run-make/rustdoc-scrape-examples-macros/Makefile
 run-make/rustdoc-scrape-examples-multiple/Makefile
-run-make/rustdoc-scrape-examples-whitespace/Makefile
 run-make/rustdoc-verify-output-files/Makefile
 run-make/rustdoc-with-output-option/Makefile
 run-make/rustdoc-with-short-out-dir-option/Makefile

tests/run-make/rustdoc-scrape-examples-whitespace/Makefile

@@ -0,0 +1,6 @@
+#[path = "../rustdoc-scrape-examples-remap/scrape.rs"]
+mod scrape;
+
+fn main() {
+    scrape::scrape(&[]);
+}