[DOCS] Fix case of network direction processor title

jrodewig · jrodewig · commit f0160dfaca1f · 2021-04-19T10:18:38.000-04:00
diff --git a/docs/reference/ingest/processors/network-direction.asciidoc b/docs/reference/ingest/processors/network-direction.asciidoc
@@ -3,7 +3,7 @@
 [[network-direction-processor]]
 === Network direction processor
 ++++
-<titleabbrev>Network Direction</titleabbrev>
+<titleabbrev>Network direction</titleabbrev>
 ++++
 
 Calculates the network direction given a source IP address, destination IP
