[Jbeta] Old form of format in help

[Don Guinn]

Taylor approximation uses the old form for format (":)
6.2 ": ^ <>T. <file:///C:/j602/help/dictionary/dtcapdot.htm#L2M3> 8 x=: 2 %~
i.8

The 6.2 should be 6j2
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