Fix links and typos

Author: FDelporte

content/_index.md

@@ -4,7 +4,7 @@ title: Welcome to Pi4J
 
 ## Welcome to Pi4J
 
-**Latest release: V4.0.0 (2025-02-20, see [Release Notes](/about/release-notes/)).**
+**Latest release: V4.0.0 (2026-02-20, see [Release Notes](/about/release-notes/)).**
 
 This project is intended to provide **a friendly object-oriented I/O API and implementation libraries for Java Programmers** to access the **full I/O capabilities of the Raspberry Pi platform**. This project abstracts the low-level native integration and interrupt monitoring to enable Java programmers to **focus on implementing their application business logic**.
 

content/about/release-notes.md

@@ -9,9 +9,9 @@ All releases of Pi4J V2+ are listed on [github.com/Pi4J/pi4j/releases](https://g
 
 Requires Java 25, see [What's New in V4](/about/info-v4/) for more info.
 
-### 2025-02-20 - V4.0.0
+### 2026-02-20 - V4.0.0
 
-This is a big release with almost 400 commits and 300+ files added/changed...! **Pi4J V4 introduces the new [FFM plugin](/documentation/provider/ffm) and bumps the Java version to 25**. The FFM plugin makes use of the now Foreign Function & Memory API (FFM) to access the GPIOs. The FFM API got introduced in Java 22 with [JEP 454](https://openjdk.org/jeps/454).
+This is a big release with almost 400 commits and 300+ files added/changed...! **Pi4J V4 introduces the new [FFM plugin](/documentation/providers/ffm) and bumps the Java version to 25**. The FFM plugin makes use of the now Foreign Function & Memory API (FFM) to access the GPIOs. The FFM API got introduced in Java 22 with [JEP 454](https://openjdk.org/jeps/454).
 
 This is the most tested release of Pi4J yet! The `pi4j-test` module has been reworked by [@taartspi](https://github.com/taartspi) to provide a smoke test approach with a fixed hardware setup that uses, for instance, input GPIOs to validate output GPIOs and PWM. Check [Hardware Testing](/architecture/about-the-code/hardware-testing/) for more info and how to setup.
 

content/architecture/about-the-code/download-sources.md

@@ -7,7 +7,7 @@ You can build the project from sources available on [GitHub](https://github.com/
 
 * Checkout the `develop` branch of the [pi4j repository](https://github.com/Pi4J/pi4j).
 * Use a JDK version 25 or newer, e.g. `sdk use java 25.0.1-zulu`.
-* In the root of the `pi4j directory, run `mvn clean install`.
+* In the root of the `pi4j` directory, run `mvn clean install`.
 
 ```
 [INFO] Executed tasks

content/documentation/providers/_index.md

@@ -21,9 +21,12 @@ Current supported providers:
 * [FFM](/documentation/providers/ffm/)
   * Was introduced in Pi4J 4.0.0
   * Pro
-    * ...
+    * Doesn't need complex Docker-based builds of libraries
+    * Uses latest modern Java LTS version 25
+    * Simplifies code
+    * Can be used on other boards than Raspberry Pi
   * Contra
-    * ...
+    * Not found yet... ;-)
 * [GpioD](/documentation/providers/gpiod/)
   * Was introduced in Pi4J 2.5.0
   * Pro

content/documentation/providers/ffm.md

@@ -26,7 +26,7 @@ Providers in the FFM plugin:
    </dependency>
    ```
 
-When using FFM API functionality added to Java in version 22, you will be alerted at startup of the applicatoin with this message:
+When using FFM API functionality added to Java in version 22, you will be alerted at startup of the application with this message:
 
 ```text
 WARNING: A restricted method in java.lang.foreign.AddressLayout has been called