Fix typo [skip ci]

man/meson.1

@@ -37,7 +37,7 @@ backend of Meson is Ninja, which can be invoked like this.
 
 You only need to run the Meson command once: when you first configure
 your build dir. After that you just run the build command. Meson will
-autodetect changes in your source tree and regenerates all files
+autodetect changes in your source tree and regenerate all files
 needed to build the project.
 
 The setup command is the default operation. If no actual command is