Fix some links in docs/linux

The documents are already in linux/ so they should not have linux/ in the path,
otherwise the link will be invalid.

R=sky

Change-Id: Iff06ba371672bc5f1d7c06d54babb90e3b4edbcf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992800
Auto-Submit: Thomas Anderson <[email protected]>
Commit-Queue: Scott Violet <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Cr-Commit-Position: refs/heads/master@{#729782}
diff --git a/docs/linux/debugging.md b/docs/linux/debugging.md
index 329783f..1310a45 100644
--- a/docs/linux/debugging.md
+++ b/docs/linux/debugging.md
@@ -317,7 +317,7 @@
 
 ## Breakpad minidump files
 
-See [minidump_to_core.md](linux/minidump_to_core.md)
+See [minidump_to_core.md](minidump_to_core.md)
 
 ## Running Tests