fix syntax errors (#2240)

README.md

@@ -86,15 +86,15 @@ We are looking forward to your PR!
 
    A: Different CNI Implementations have different scopes, there is no single implementation that can resolve all network problems. Kube-OVN is aiming to bring SDN to Cloud Native. 
       If you are missing the old day network concepts like VPC, Subnet, customize route, security groups etc. you can not find corresponding functions in any other CNIs. Then Kube-OVN
-      is you only choice when you need these functions to build datacenter or enterprise network fabric.
+      is your only choice when you need these functions to build datacenter or enterprise network fabric.
 
 2. Q: How about the scalability of Kube-OVN?
 
    A: We have simulated 200 Nodes with 10k Pods by kubemark, and it works fine. Some community users have deployed one cluster with 500 Nodes and 10k+ Pods in production. It's still not reach the limitation, but we don't have enough resources to find the limitation.
 
 3. Q: What's the Addressing/IPAM? Node-specific or cluster-wide?
 
-   A: Kube-OVN use a cluster-wide IPAM, Pod address can float to any nodes in the cluster.
+   A: Kube-OVN uses a cluster-wide IPAM, Pod address can float to any nodes in the cluster.
 
 4. Q: What's the encapsulation?