`savehtml` documented but not available?

In the docs the function `savehtml` is referenced [api ref](https://juliaplots.org/PlotlyJS.jl/stable/api/#PlotlyBase.savehtml) but i cannot load it.

```
julia> using PlotlyBase

julia> using PlotlyJS

julia> PlotlyBase.savehtml
ERROR: UndefVarError: `savehtml` not defined
Stacktrace:
[1] getproperty(x::Module, f::Symbol)
@ Base ./Base.jl:31
[2] top-level scope
@ REPL[7]:1
```

[f0f68f2c] PlotlyJS v0.18.15

```
julia> versioninfo()
Julia Version 1.10.2
Commit bd47eca2c8a (2024-03-01 10:14 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Linux (x86_64-linux-gnu)
CPU: 16 × AMD Ryzen 9 5900HX with Radeon Graphics
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-15.0.7 (ORCJIT, znver3)
Threads: 1 default, 0 interactive, 1 GC (on 16 virtual cores)
```