Ender-3 default TMC currents #20
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This PR reduces the current for TMC drivers since this config was using stock Marlin values.
Note: Stock motors are rated from the manufacturer using peak values instead of RMS (See bigtreetech/BIGTREETECH-SKR-mini-E3#22 (comment) and this gist from @knoopx), which is why these values are less than the advertised ratings of 840mA for X/Y/Z and 1000mA for E.