Fix documentation typos and misspellings

Fix some typos and misspellings in TF-A documentation.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
Change-Id: Id72553ce7b2f0bed9821604fbc8df4d4949909fa
diff --git a/docs/plat/marvell/armada/misc/mvebu-iob.rst b/docs/plat/marvell/armada/misc/mvebu-iob.rst
index d02a7e8..aa41822 100644
--- a/docs/plat/marvell/armada/misc/mvebu-iob.rst
+++ b/docs/plat/marvell/armada/misc/mvebu-iob.rst
@@ -1,7 +1,7 @@
 Marvell IOB address decoding bindings
 =====================================
 
-IO bridge configration driver (3rd stage address translation) for Marvell Armada 8K and 8K+ SoCs.
+IO bridge configuration driver (3rd stage address translation) for Marvell Armada 8K and 8K+ SoCs.
 
 The IOB includes a description of the address decoding configuration.