pylama: Use %s instead of %t

Although using %t to lint changes was desirable, many pylama checks use
surrounding paths and file contents (e.g. C0103 module name, E0402
relative import beyond top, etc.)  The more such errors I find during
testing, the less %t seems like a good idea.  Switch to %s.

Also set `lint_file` to 1 and mark Pylama as a file linter in the docs.

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>

doc/ale-supported-languages-and-tools.txt

@@ -332,6 +332,7 @@ Notes:
   * `prospector`
   * `pycodestyle`
   * `pydocstyle`
+  * `pylama`!!
   * `pylint`!!
   * `pyls`
   * `pyre`