Typo fix

Author: dzhidzhoev

llvm/include/llvm/IR/DebugInfoMetadata.h

@@ -2616,7 +2616,7 @@ class DISubprogram : public DILocalScope {
   /// after module loading. It removes references to types belonging
   /// to other DISubprograms from a subprogram's retainedNodes list.
   /// If a corresponding IR function refers to local scopes from another
-  /// subprogram, emitted debug info (i.e. DWARF) should rely
+  /// subprogram, emitted debug info (e.g. DWARF) should rely
   /// on cross-subprogram references (and cross-CU references, as subprograms
   /// may belong to different compile units). This is also a drawback:
   /// when a subprogram refers to types that are local to another subprogram,