make trunc kwarg explicit in docstrings

Author: lkdvos

src/interface/eig.jl

@@ -32,9 +32,9 @@ See also [`eig_vals(!)`](@ref eig_vals) and [`eig_trunc(!)`](@ref eig_trunc).
 @functiondef eig_full
 
 """
-    eig_trunc(A; kwargs...) -> D, V, ϵ
+    eig_trunc(A; [trunc], kwargs...) -> D, V, ϵ
     eig_trunc(A, alg::AbstractAlgorithm) -> D, V, ϵ
-    eig_trunc!(A, [DV]; kwargs...) -> D, V, ϵ
+    eig_trunc!(A, [DV]; [trunc], kwargs...) -> D, V, ϵ
     eig_trunc!(A, [DV], alg::AbstractAlgorithm) -> D, V, ϵ
 
 Compute a partial or truncated eigenvalue decomposition of the matrix `A`,

src/interface/svd.jl

@@ -42,9 +42,9 @@ See also [`svd_full(!)`](@ref svd_full), [`svd_vals(!)`](@ref svd_vals) and
 @functiondef svd_compact
 
 """
-    svd_trunc(A; kwargs...) -> U, S, Vᴴ, ϵ
+    svd_trunc(A; [trunc], kwargs...) -> U, S, Vᴴ, ϵ
     svd_trunc(A, alg::AbstractAlgorithm) -> U, S, Vᴴ, ϵ
-    svd_trunc!(A, [USVᴴ]; kwargs...) -> U, S, Vᴴ, ϵ
+    svd_trunc!(A, [USVᴴ]; [trunc], kwargs...) -> U, S, Vᴴ, ϵ
     svd_trunc!(A, [USVᴴ], alg::AbstractAlgorithm) -> U, S, Vᴴ, ϵ
 
 Compute a partial or truncated singular value decomposition (SVD) of `A`, such that