[WebAssembly] Rename variale references in comments after VariableName -> variableName change

llvm-svn: 366192
diff --git a/lld/wasm/Writer.cpp b/lld/wasm/Writer.cpp
index 5d81f23..77a29a2 100644
--- a/lld/wasm/Writer.cpp
+++ b/lld/wasm/Writer.cpp
@@ -191,7 +191,7 @@
 // to each of the input data sections as well as the explicit stack region.
 // The default memory layout is as follows, from low to high.
 //
-//  - initialized data (starting at Config->GlobalBase)
+//  - initialized data (starting at Config->globalBase)
 //  - BSS data (not currently implemented in llvm)
 //  - explicit stack (Config->ZStackSize)
 //  - heap start / unallocated