remove confusing parts of sentence
I can guess what this meant, but decided to just keep it simple
diff --git a/src/profiling/with_perf.md b/src/profiling/with_perf.md
index 0d4f23b..e452dde 100644
--- a/src/profiling/with_perf.md
+++ b/src/profiling/with_perf.md
@@ -4,8 +4,7 @@
## Initial steps
-- Get a clean checkout of rust-lang/master, or whatever it is you want
- to profile.
+- Get a clean checkout of rust-lang/rust
- Set the following settings in your `bootstrap.toml`:
- `rust.debuginfo-level = 1` - enables line debuginfo
- `rust.jemalloc = false` - lets you do memory use profiling with valgrind
