fixing some typos on the icestorm page

docs/markdown/Icestorm-module.md

@@ -1,6 +1,6 @@
 # Unstable IceStorm module
 
-This module provides is available since version 0.45.0.
+This module is available since version 0.45.0.
 
 **Note**: this module is unstable. It is only provided as a technology
 preview.  Its API may change in arbitrary ways between releases or it
@@ -8,7 +8,7 @@ might be removed from Meson altogether.
 
 ## Usage
 
-This module provides an experimental to create FPGA bitstreams using
+This module provides an experimental method to create FPGA bitstreams using
 the [IceStorm](http://www.clifford.at/icestorm/) suite of tools.
 
 The module exposes only one method called `project` and it is used
@@ -24,4 +24,4 @@ constraint file. This produces output files called `projname.asc`,
 `projname.blif` and `projname.bin`. In addition it creates two run
 targets called `projname-time` for running timing analysis and
 `projname-upload` that uploads the generated bitstream to an FPGA
-devide using the `iceprog` programming executable.
+device using the `iceprog` programming executable.