Editor does not highlight the whole @summary Javadoc tag when it contains a dot

### Apache NetBeans version

Apache NetBeans 17

### What happened

#5180 added support for the `@summary` Javadoc tag, but as you can see in the screenshots in https://github.com/apache/netbeans/pull/5180#issuecomment-1372754023, the highlighting of the summary still ends at the first dot.

### How to reproduce

In the following examples, the whole first sentence in each Javadoc comment should be bold. This does not work for the last example.

```
/**
* This sentence should be highlighted (bold). But not this one.
*/
public void foo() {
}

/**
* This sentence should be highlighted, e. g. bold. But not this
* one.
*/
public void bar() {
}

/**
* {@summary This sentence should be highlighted, e. g. bold.} But not this
* one.
*/
public void baz() {
}
```

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Windows 10 64 Bit

### JDK

19

### Apache NetBeans packaging

Apache NetBeans binary zip

### Anything else

See https://bugs.java.com/view_bug.do?bug_id=JDK-8173425

### Are you willing to submit a pull request?

No

Reproduce the issue in the NetBeans editor using the `@summary` example with “e. g.” and compare it with the working examples. Read the support added in pull request #5180 and the linked JDK-8173425 report; done means the whole first sentence is bold while the following sentence is not.

Written by the indexing model from the issue text.