So what they are saying is that you replace that resistor with the value you need to limit the current as appropriate for your battery.
That's quite clear in the DX page and also in the TP4056 data sheet.
If you look at the resistor connected to the TP4056's pin 2 on the DX photo it's a 1k2 so they default to 1A, just remove that resistor and put your 20k (or whatever) in it's place. Note that the data sheet only goes to 10k, where did the 20k and 30k values come from?
We were all there at some point, and I still am.
Not me, I started as an expert and worked my way up from there 