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fix(docs): fix example readme (#61)

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python/knext/knext/examples/riskmining/README.md
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@ -15,23 +15,13 @@ knext project create --prj_path .
knext schema commit
```
- Then, we will build the knowledge graph based on the schema.
The data source of the knowledge graph is a local CSV file located in the ./builder/job/data directory.
During the process of the knowledge graph construction, it may be necessary to preprocess the raw data.
In such cases, we need to invoke construction operators.
Therefore, before constructing the knowledge graph, we need to publish the construction operators.
```bash
knext operator publish CertLinkerOperator
```
- Next, we can start building the knowledge graph based on the created schema and published operators.
We can import entities such as App, Cert, Person, Company, along with their attributes and relations.
After completing these operations, we will obtain a RiskMining knowledge graph.
```bash
knext builder submit TaxOfRiskUser,TaxOfRiskApp,Cert,Company,CompanyHasCert
knext builder submit App,Device,Person,PersonFundTrans,PersonHasDevice,PersonHoldShare
knext builder execute TaxOfRiskUser,TaxOfRiskApp,Cert,Company,CompanyHasCert
knext builder execute App,Device,Person,PersonFundTrans,PersonHasDevice,PersonHoldShare
```
- Next, we can also explore some more exciting possibilities. We define some logical rules,
@ -51,9 +41,9 @@ knext schema reg_concept_rule --file ./schema/concept.rule
Now, Let's run it!
```bash
knext reasoner query --file ./reasoner/gambling_app.dsl
knext reasoner query --dsl "MATCH (phone:STD.ChinaMobile)<-[:hasPhone]-(u:RiskMining.Person) RETURN u.name,phone.id"
knext reasoner query --dsl "MATCH (s:\`RiskMining.TaxOfRiskApp\`/\`赌博应用\`) RETURN s.id"
knext reasoner query --dsl "MATCH (s:\`RiskMining.TaxOfRiskUser\`/\`赌博App开发者\`) RETURN s.id,s.name"
knext reasoner execute --file ./reasoner/gambling_app.dsl
knext reasoner execute --dsl "MATCH (phone:STD.ChinaMobile)<-[:hasPhone]-(u:RiskMining.Person) RETURN u.name,phone.id"
knext reasoner execute --dsl "MATCH (s:\`RiskMining.TaxOfRiskApp\`/\`赌博应用\`) RETURN s.id"
knext reasoner execute --dsl "MATCH (s:\`RiskMining.TaxOfRiskUser\`/\`赌博App开发者\`) RETURN s.id,s.name"
```