feat: extended community packages page

Author: szhorvat

community/packages.md

@@ -6,10 +6,10 @@ lead: Third-party interfaces and packages maintained by the community
 
 ## Third-party interfaces
 
-* [matlab-igraph](https://davidrconnell.github.io/matlab-igraph/) - a Matlab interface for igraph
+* [matlab-igraph](https://davidrconnell.github.io/matlab-igraph/) - a MATLAB interface for igraph.
 
-* [Igraphs.jl](https://github.com/JuliaGraphs/IGraphs.jl) - Julia wrapper around igraph
+* [IGraphs.jl](https://github.com/JuliaGraphs/IGraphs.jl) - Julia wrapper around igraph.
 
 ## Related projects
 
-
+* [igraphwalshdata](https://github.com/benyamindsmith/igraphwalshdata) - Melanie Walsh's sample social network datasets made available for R/igraph.