Correct syntax for `error_bar` of `pygmt.Figure.plot`
@@ -118,9 +118,9 @@ def plot(self, data=None, x=None, y=None, size=None, direction=None, **kwargs):
*dx/dy* [Default is no offset]. If *dy* is not given it is set
equal to *dx*.
error_bar : bool or str
- [**+b**\|\ **d**\|\ **D**][**+xl**\|\ **r**\|\ *x0*]\
- [**+yl**\|\ **r**\|\ *y0*][**+p**\ *pen*].
- Draw symmetrical error bars. Full documentation is at
+ [**x**\|\ **y**\|\ **X**\|\ **Y**][**+a**\|\ **A**]\
+ [**+cl**\|\ **f**][**+n**][**+w**\ *cap*][**+p**\ *pen*].
+ Draw error bars. Full documentation is at
:gmt-docs:`plot.html#e`.
connection : str
[**c**\|\ **n**\|\ **r**]\
