docs: cleanup typos on readthrough

Type: style

Change-Id: I3b15035ea6c13cd1ca3cdc9dfa9b10a6e1be9880
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
diff --git a/docs/gettingstarted/developers/fib20/scale.rst b/docs/gettingstarted/developers/fib20/scale.rst
index c97297d..8cee1f1 100644
--- a/docs/gettingstarted/developers/fib20/scale.rst
+++ b/docs/gettingstarted/developers/fib20/scale.rst
@@ -93,7 +93,7 @@
 The IPv6 heap is used to allocate the memory needed for the
 data-structure within which the IPv6 prefixes are stored. IPv6 also
 has the concept of forwarding and non-forwarding entries, however for
-IPv6 all the forwardind entries are stored in a single hash table
+IPv6 all the forwarding entries are stored in a single hash table
 (same goes for the non-forwarding). The key to the hash table includes
 the IPv6 table-id.