[skip ci] mesonwrap docs: limit line length and remove trailing spaces

docs/markdown/Adding-new-projects-to-wrapdb.md

@@ -13,7 +13,10 @@ this particular release.
 There are two types of wraps on WrapDB - regular wraps and wraps with Meson build
 definition patches. A wrap file in a repository on WrapDB must have a name `upstream.wrap`.
 
-Wraps with Meson build definition patches work in much the same way as Debian: we take the unaltered upstream source package and add a new build system to it as a patch. These build systems are stored as Git repositories on GitHub. They only contain build definition files. You may also think of them as an overlay to upstream source.
+Wraps with Meson build definition patches work in much the same way as Debian:
+we take the unaltered upstream source package and add a new build system to it as a patch.
+These build systems are stored as Git repositories on GitHub. They only contain build definition files.
+You may also think of them as an overlay to upstream source.
 
 Whenever a new commit is pushed into GitHub's project branch, a new wrap is generated
 with an incremented version number. All the old releases remain unaltered.
@@ -99,7 +102,8 @@ git remote add origin <repo url>
 git push -u origin master
 ```
 
-Note that this is the *only* commit that will ever be made to master branch. All other commits are done to branches.
+Note that this is the *only* commit that will ever be made to master branch.
+All other commits are done to branches.
 
 Repo names must fully match this regexp: `[a-z0-9._]+`.