small doc changes

Author: lkdvos

docs/src/lib/tensors.md

@@ -118,15 +118,15 @@ blocks
 
 To access the data associated with a specific fusion tree pair, you can use:
 ```@docs
-Base.getindex(::TensorMap{T,S,N₁,N₂}, ::FusionTree{I,N₁}, ::FusionTree{I,N₂}) where {T,S,N₁,N₂,I<:Sector}
-Base.setindex!(::TensorMap{T,S,N₁,N₂}, ::Any, ::FusionTree{I,N₁}, ::FusionTree{I,N₂}) where {T,S,N₁,N₂,I<:Sector}
+Base.getindex(::AbstractTensorMap, ::FusionTree, ::FusionTree)
+Base.setindex!(::AbstractTensorMap, ::Any, ::FusionTree, ::FusionTree)
 ```
 
 For a tensor `t` with `FusionType(sectortype(t)) isa UniqueFusion`, fusion trees are 
 completely determined by the outcoming sectors, and the data can be accessed in a more
 straightforward way:
 ```@docs
-Base.getindex(::TensorMap, ::Tuple{I,Vararg{I}}) where {I<:Sector}
+Base.getindex(::AbstractTensorMap, ::Tuple{I,Vararg{I}}) where {I<:Sector}
 ```
 
 For tensor `t` with `sectortype(t) == Trivial`, the data can be accessed and manipulated