update layers compatible with heterograph (#413)

Author: askorupka

docs/src/api/conv.md

@@ -18,22 +18,22 @@ The table below lists all graph convolutional layers implemented in the *GraphNe
 | Layer                       |Sparse Ops|Edge Weight|Edge Features| Heterograph  | TemporalSnapshotsGNNGraphs |
 | :--------                   |  :---:   |:---:      |:---:        |  :---:       | :---:                      |
 | [`AGNNConv`](@ref)          |          |           |     ✓       |              |                    |                          
-| [`CGConv`](@ref)            |          |           |     ✓       |              |             ✓             | 
+| [`CGConv`](@ref)            |          |           |     ✓       |       ✓      |             ✓             | 
 | [`ChebConv`](@ref)          |          |           |             |              |                ✓           |
 | [`EGNNConv`](@ref)          |          |           |     ✓       |              |                           |
-| [`EdgeConv`](@ref)          |          |           |             |              |                            |  
-| [`GATConv`](@ref)           |          |           |     ✓       |              |              ✓             |
-| [`GATv2Conv`](@ref)         |          |           |     ✓       |              |             ✓              |
+| [`EdgeConv`](@ref)          |          |           |             |       ✓      |                            |  
+| [`GATConv`](@ref)           |          |           |     ✓       |       ✓      |              ✓             |
+| [`GATv2Conv`](@ref)         |          |           |     ✓       |       ✓      |             ✓              |
 | [`GatedGraphConv`](@ref)    |     ✓    |           |             |              |            ✓               |
 | [`GCNConv`](@ref)           |     ✓    |     ✓     |             |              |                            |
-| [`GINConv`](@ref)           |     ✓    |           |             |              |                ✓           |
+| [`GINConv`](@ref)           |     ✓    |           |             |       ✓      |               ✓           |
 | [`GMMConv`](@ref)           |          |           |     ✓       |              |                            |
-| [`GraphConv`](@ref)         |     ✓    |           |             |       ✓      |              ✓              |   
+| [`GraphConv`](@ref)         |     ✓    |           |             |       ✓      |              ✓             |   
 | [`MEGNetConv`](@ref)        |          |           |     ✓       |              |                            |              
 | [`NNConv`](@ref)            |          |           |     ✓       |              |                            |
-| [`ResGatedGraphConv`](@ref) |          |           |             |              |               ✓             |
-| [`SAGEConv`](@ref)          |     ✓    |           |             |              |             ✓               |
-| [`SGConv`](@ref)            |     ✓    |           |             |              |             ✓             |
+| [`ResGatedGraphConv`](@ref) |          |           |             |       ✓      |               ✓             |
+| [`SAGEConv`](@ref)          |     ✓    |           |             |       ✓      |             ✓               |
+| [`SGConv`](@ref)            |     ✓    |           |             |       ✓      |             ✓             |
 | [`TransformerConv`](@ref)   |          |           |     ✓       |              |                           |