Apply suggestions from code review

Co-authored-by: Ben Ahmady <[email protected]>

Author: geoffw0

swift/ql/src/queries/Security/CWE-089/SqlInjection.qhelp

@@ -5,7 +5,7 @@
 <overview>
 
 <p>
-If a database query (such as an SQL query) is built from user-provided data without sufficient sanitization, a user may be able to run malicious database queries.
+If a database query (such as a SQL query) is built from user-provided data without sufficient sanitization, a user may be able to run malicious database queries.
 </p>
 
 </overview>
@@ -18,7 +18,7 @@ Most database connector libraries offer a way of safely embedding untrusted data
 </recommendation>
 <example>
 
-<p>In the following example, an SQL query is prepared using string interpolation to directly include a user-controlled value <code>userControlledString</code> in the query. An attacker could craft the part they control to change the overall meaning of the SQL query.
+<p>In the following example, a SQL query is prepared using string interpolation to directly include a user-controlled value <code>userControlledString</code> in the query. An attacker could craft the part they control to change the overall meaning of the SQL query.
 </p>
 
 <sample src="SqlInjectionBad.swift" />