link to archived version of Collecting Shared Objects (#1530)

When a reference in the Bibliography is available online, it would seem to be nice to have a link. In this example, the original article was published in C/C++ User's Journal, with the content later ported to the DDJ web site. The DDJ site is no longer reliable, but a good copy exists in archive.org, and I've linked to it here.

CppCoreGuidelines.md

@@ -22286,7 +22286,7 @@ Alternatively, we will decide that no change is needed and delete the entry.
 * <a name="Stroustrup15"></a>
   \[Stroustrup15]:    B. Stroustrup, Herb Sutter, and G. Dos Reis: [A brief introduction to C++'s model for type- and resource-safety](https://github.com/isocpp/CppCoreGuidelines/blob/master/docs/Introduction%20to%20type%20and%20resource%20safety.pdf).
 * <a name="SuttHysl04b"></a>
-  \[SuttHysl04b]:     H. Sutter and J. Hyslop. "Collecting Shared Objects" (C/C++ Users Journal, 22(8), August 2004).
+  \[SuttHysl04b]:     H. Sutter and J. Hyslop. [Collecting Shared Objects](https://web.archive.org/web/20120926011837/http://www.drdobbs.com/collecting-shared-objects/184401839) (C/C++ Users Journal, 22(8), August 2004).
 * <a name="SuttAlex05"></a>
   \[SuttAlex05]:      H. Sutter and  A. Alexandrescu. C++ Coding Standards. Addison-Wesley 2005.
 * <a name="Sutter00"></a>