docs/esp32: Document WLAN "reconnects" config option.

Author: twenrich

docs/esp32/quickref.rst

@@ -102,6 +102,14 @@ Once the network is established the :mod:`socket <usocket>` module can be used
 to create and use TCP/UDP sockets as usual, and the ``urequests`` module for
 convenient HTTP requests.
 
+After a call to ``wlan.connect()``, the device will by default retry to connect
+**forever**, even when the authentication failed or no AP is in range.
+``wlan.status()`` will return ``network.STAT_CONNECTING`` in this state until a
+connection succeeds or the interface gets disabled.  This can be changed by
+calling ``wlan.config(reconnects=n)``, where n are the number of desired reconnect
+attempts (0 means it won't retry, -1 will restore the default behaviour of trying
+to reconnect forever).
+
 Delay and timing
 ----------------
 

docs/library/network.WLAN.rst

@@ -129,4 +129,5 @@ Methods
    authmode       Authentication mode supported (enumeration, see module constants)
    password       Access password (string)
    dhcp_hostname  The DHCP hostname to use
+   reconnects     Number of reconnect attempts to make (integer, 0=none, -1=unlimited)
    =============  ===========