Fix build instructions contents

The table of contents for the Chromium build instructions omits "git
status" meaning that the entry just says "Improving performance of",
which is a bit cryptic.

Also, the title isn't really accurate because the suggestions in that
section actually improve the performance of many git commands, such as
"git reset --hard" and many others.

Bug: None
Change-Id: I509cf4eefd830c5e26d9cbc2e7478ecdccea3a69
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4641872
Reviewed-by: Avi Drissman <[email protected]>
Commit-Queue: Avi Drissman <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1162142}
diff --git a/docs/ios/build_instructions.md b/docs/ios/build_instructions.md
index 213ecab..d8f6f440 100644
--- a/docs/ios/build_instructions.md
+++ b/docs/ios/build_instructions.md
@@ -430,7 +430,7 @@
 If you use `xcode-select` to switch between multiple version of Xcode,
 you will have to follow the same steps.
 
-### Improving performance of `git status`
+### Improving performance of git commands
 
 #### Increase the vnode cache size