[format] Add correct punctuation to comment

Test commit that adds a grammatically correct full stop to a single
comment.

llvm-svn: 357771
diff --git a/llvm/tools/llvm-readobj/ObjDumper.cpp b/llvm/tools/llvm-readobj/ObjDumper.cpp
index f762ff8..2009dde 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.cpp
+++ b/llvm/tools/llvm-readobj/ObjDumper.cpp
@@ -130,7 +130,7 @@
     // We are adding the (4 - i) last rows that are 8 characters each.
     // Then, the (4 - i) spaces that are in between the rows.
     // Least, if we cut in a middle of a row, we add the remaining characters,
-    // which is (8 - (k * 2))
+    // which is (8 - (k * 2)).
     if (i < 4)
       W.startLine() << format("%*c", (4 - i) * 8 + (4 - i) + (8 - (k * 2)),
                               ' ');