Documentation: devres: fix typo in interface list

Fix the misspelled devm_get_clk_from_child() helper name in the devres
interface list.
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20220427073142.16700-1-johan+linaro@kernel.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/driver-api/driver-model/devres.rst

@@ -249,7 +249,7 @@ CLOCK
   devm_clk_bulk_get()
   devm_clk_bulk_get_all()
   devm_clk_bulk_get_optional()
-  devm_get_clk_from_childl()
+  devm_get_clk_from_child()
   devm_clk_hw_register()
   devm_of_clk_add_hw_provider()
   devm_clk_hw_register_clkdev()