Documentation: use correct highlighter


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168871 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/CommandGuide/bugpoint.rst b/docs/CommandGuide/bugpoint.rst
index 66eba74..e4663e5 100644
--- a/docs/CommandGuide/bugpoint.rst
+++ b/docs/CommandGuide/bugpoint.rst
@@ -37,7 +37,7 @@
  Pass all arguments specified after **--args** to the test program whenever it runs.
  Note that if any of the *program args* start with a "``-``", you should use:
 
- .. code-block:: perl
+ .. code-block:: bash
 
       bugpoint [bugpoint args] --args -- [program args]
 
@@ -51,7 +51,7 @@
  (**llc**, **lli**, etc.) whenever it runs.  You should use this option in the
  following way:
 
- .. code-block:: perl
+ .. code-block:: bash
 
       bugpoint [bugpoint args] --tool-args -- [tool args]
 
@@ -108,7 +108,7 @@
  optimizations, use the **-help** and **--load** options together; for example:
 
 
- .. code-block:: perl
+ .. code-block:: bash
 
       bugpoint --load myNewPass.so -help