Updated linux build instruction link (#419)

* Updated linux build instruction link

The content behind the suggested it

* Removed unwanted whitespace changes

* Remove unrelated change.

README.md

@@ -8,7 +8,7 @@ dependencies (e.g., Blink, V8, etc.).
 
 ### Prerequisites
 
-* [Linux](https://chromium.googlesource.com/chromium/src/+/master/docs/linux_build_instructions_prerequisites.md)
+* [Linux](https://chromium.googlesource.com/chromium/src/+/master/docs/linux_build_instructions.md)
 * [Mac](https://chromium.googlesource.com/chromium/src/+/master/docs/mac_build_instructions.md#Prerequisites)
 * [Windows](https://chromium.googlesource.com/chromium/src/+/master/docs/windows_build_instructions.md)
 
@@ -153,4 +153,4 @@ git checkout some-branch-or-sha
 
 For Electron versions 1.6 and lower, libchromiumcontent is vendored as part
 of a (now retired) project called brightray. To change the version that 
-Electron is using, change the commit SHA in [config.py](https://github.com/electron/electron/blob/0428632a4e5dfa65e7ffbe39ff208069f0b9cdc4/script/lib/config.py#L12).
+Electron is using, change the commit SHA in [config.py](https://github.com/electron/electron/blob/0428632a4e5dfa65e7ffbe39ff208069f0b9cdc4/script/lib/config.py#L12).