Replaced orphan " and" at the end of the sentence by a dot

[Levure]

No description provided.

[borisklotz]

I would suggest to use a colon instead of a period sign, as most paragraphs followed by a code sample end with a colon not a period.

[javiereguiluz]

@Levure thanks! @borisklotz is right. The double :: at the end of some text and before a code sample is needed. In RST, adding :: before a code sample tells the doc parser to highlight the code as PHP. (We could use .. code-block:: php ... but we have so many PHP examples, that we use the :: trick instead. Please note, we're not planning to change this, so no pull request to introduce .. code-block:: php 😅 Thanks!).