fixed typo
Change-Id: I05371ea0aebe1ced832f78a0f82b0e040412ce8b
diff --git a/docs/core_models.md b/docs/core_models.md
index 7458194..6f8d53f 100644
--- a/docs/core_models.md
+++ b/docs/core_models.md
@@ -38,7 +38,7 @@
end result is a collection of interconnected ServiceInstance objects,
forming the CORD-equivalent of a service chain. (This "chain" is often
linear, but because the model allows for a many-to-many relationship
-among service instances, this "chain" can from an arbitrary graph.)
+among service instances, it can form an arbitrary graph.)
Each node in this service chain (graph of ServiceInstance objects)
represents some combination of virtualized compute and network