DOC: Document the `timeout` option.

Summary

Document the timeout option.

For issue #102 (closed)

Focus

Test Environment

make doc

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examples/pycaosdb.ini

@@ -67,3 +67,6 @@
 
 # This option is used internally and for testing. Do not override.
 # implementation=_DefaultCaosDBServerConnection
+
+# The timeout for requests to the server.
+# timeout=1000