Address sphinx warnings

LanguageExtensions.rst:2191: WARNING: Title underline too short.
llvm-symbolizer.rst:157: Error in "code-block" directive: maximum 1 argument(s) allowed, 30 supplied.
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 820b150..5c8465a 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -155,10 +155,11 @@
 shows --relativenames.
 
 .. code-block:: console
+
   $ pwd
   /tmp
   $ clang -g foo/test.cpp -o test.elf
-  $ llvm-symbolizer --obj=test.elf 0x4004a0 
+  $ llvm-symbolizer --obj=test.elf 0x4004a0
   main
   /tmp/foo/test.cpp:15:0
   $ llvm-symbolizer --obj=test.elf 0x4004a0 --basenames
@@ -167,7 +168,7 @@
   $ llvm-symbolizer --obj=test.elf 0x4004a0 --relativenames
   main
   foo/test.cpp:15:0
-   
+
 OPTIONS
 -------