fib: fix some typos in fib/mtrie

Type: fix

Change-Id: I1af0e4a9bc23a3b6b6d3a74df093801ab6cae1f8
Signed-off-by: Lijian Zhang <Lijian.Zhang@arm.com>
diff --git a/src/vnet/dpo/load_balance.h b/src/vnet/dpo/load_balance.h
index a204b7f..5428e20 100644
--- a/src/vnet/dpo/load_balance.h
+++ b/src/vnet/dpo/load_balance.h
@@ -175,7 +175,7 @@
 } load_balance_t;
 
 STATIC_ASSERT(sizeof(load_balance_t) <= CLIB_CACHE_LINE_BYTES,
-	      "A load_balance object size exceeds one cachline");
+	      "A load_balance object size exceeds one cacheline");
 
 /**
  * Flags controlling load-balance formatting/display