lint: fix typos

Author: keshavdandeva

google-cloud-bigquery-jdbc/README.MD

@@ -55,7 +55,7 @@ You need to have either Java with Maven installed or Docker. You might want to i
 
 `make install` primarily relies on `mvn install` command. All following commands are primarily applicable for the `google-cloud-bigquery-jdbc` project.
 
-`bigquery-external-jdbc-tests` at this moment is indepdnent and has its own configuration.  
+`bigquery-external-jdbc-tests` at this moment is independent and has its own configuration. 
 
 ### Running tests
 
@@ -100,7 +100,7 @@ Run specific integration test
 
 Please reference [Maven documentation](https://maven.apache.org/surefire/maven-surefire-plugin/examples/single-test.html) for details about `<filter>`
 
-Example: `make unittest test=ITBigQueryJDBCTest#testValidServiceAccountAuthenticationOAuthPvtKey`
+Example: `make integration-test test=ITBigQueryJDBCTest#testValidServiceAccountAuthenticationOAuthPvtKey`
 
 ### Dockerized environment
 
@@ -137,7 +137,7 @@ Jar with all dependencies can be generated by running `make docker-package-all-d
 
 ### Custom query tests
 
-Thin client using JDBC driver can be found in 'bigquery-jdbc-test-client' folder. It allows you to run custom queries with custom connection string ot generate logs or measure performance. 
+Thin client using JDBC driver can be found in 'bigquery-jdbc-test-client' folder. It allows you to run custom queries with custom connection string to generate logs or measure performance.
 
 It can be built for Google JDBC drivers or any other JDBC drivers. For other JDBC drivers, you need to specify a version and it will download it.