[llvm-jitlink] Fix typo in description of llvm-jitlink's -alias option.

Author: lhames

llvm/tools/llvm-jitlink/llvm-jitlink.cpp

@@ -151,7 +151,8 @@ static cl::list<std::string> AbsoluteDefs(
     cl::cat(JITLinkCategory));
 
 static cl::list<std::string>
-    Aliases("alias", cl::desc("Inject symbol aliases (syntax: <name>=<addr>)"),
+    Aliases("alias",
+            cl::desc("Inject symbol aliases (syntax: <alias-name>=<aliasee>)"),
             cl::cat(JITLinkCategory));
 
 static cl::list<std::string> TestHarnesses("harness", cl::Positional,