[llvm-symbolizer] Add -exe, -e as aliases to -obj

Summary: Provides -exe, -e as aliases to -obj. Motivation: https://bugs.llvm.org/show_bug.cgi?id=40071

Reviewers: ruiu, rnk, fjricci, jhenderson

Reviewed By: jhenderson

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D56580

llvm-svn: 350925
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 9d54b75..c942d80 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -68,7 +68,7 @@
 OPTIONS
 -------
 
-.. option:: -obj
+.. option:: -obj, -exe, -e
 
   Path to object file to be symbolized.