Typo in examples

[AnthonyFlora]

self.map_widget.set_tile_server("https://a.tile.openstreetmap.org/{z}/{x}/{y}.png") # OpenStreetMap (default)
self.map_widget.set_tile_server("https://mt0.google.com/vt/lyrs=m&hl=en&x={x}&y={y}&z={z}&s=Ga", max_zoom=22) # google normal
self.map_widget.set_tile_server("https://mt0.google.com/vt/lyrs=s&hl=en&x={x}&y={y}&z={z}&s=Ga", max_zoom=22) # google satellite
self.map_widget.set_tile_server("http://c.tile.stamen.com/watercolor/{z}/{x}/{y}.png") # painting style
self.map_widget.set_tile_server("http://a.tile.stamen.com/toner/{z}/{x}/{y}.png") # black and white
self.map_widget.set_tile_server("https://tiles.wmflabs.org/hikebike/{z}/{x}/{y}.png") # detailed hiking
self.map_widget.set_tile_server("https://tiles.wmflabs.org/osm-no-labels/{z}/{x}/{y}.png") # no labels
self.map_widget.set_tile_server(""https://wmts.geo.admin.ch/1.0.0/ch.swisstopo.pixelkarte-farbe/default/current/3857/{z}/{x}/{y}.jpeg") # swisstopo map

Last entry has an extra set of quotations.

[TomSchimansky]

fixed