Fix punctuation

Author: owen-mc

java/ql/src/Performance/StringReplaceAllWithNonRegex.md

@@ -26,4 +26,4 @@ public class Test {
 ## References
 
 - Java SE Documentation: [String.replaceAll](https://docs.oracle.com/en/java/javase/20/docs/api/java.base/java/lang/String.html#replaceAll(java.lang.String,java.lang.String)).
-- Common Weakness Enumeration: [CWE-1176](https://cwe.mitre.org/data/definitions/1176.html)
+- Common Weakness Enumeration: [CWE-1176](https://cwe.mitre.org/data/definitions/1176.html).

java/ql/src/Performance/StringReplaceAllWithNonRegex.ql

@@ -19,5 +19,5 @@ where
   //only contains characters that could be a simple string
   firstArg.getValue().regexpMatch("^[a-zA-Z0-9]+$")
 select replaceAllCall,
-  "This call to 'replaceAll' should be a call `replace` as its $@ is not a regular expression.",
+  "This call to 'replaceAll' should be a call to 'replace' as its $@ is not a regular expression.",
   firstArg, "first argument"