Fixing minor typos in the vtf documentation

doc/sphinx/io.rst

@@ -327,7 +327,7 @@ a whole simulation in a single file. For more details on the format,
 refer to the VTF homepage (https://github.com/olenz/vtfplugin/wiki).
 
 Creating files in these formats from within is supported by the commands :meth:`espressomd.io.writer.vtf.writevsf`
-and :meth:`espressomd.io.writer.vtf.writevcf`, that write a structure and coordinate block (respectively ) to the
+and :meth:`espressomd.io.writer.vtf.writevcf`, that write a structure and coordinate block (respectively) to the
 given file. To create a standalone VTF file, first use ``writevsf`` at the beginning of
 the simulation to write the particle definitions as a header, and then ``writevcf``
 to generate a timeframe of the simulation state. For example:
@@ -344,7 +344,7 @@ A standalone VTF file can simply be
     # ... add particles here
 
     # write structure block as header
-    vtf.writevtf(system, fp)
+    vtf.writevsf(system, fp)
     # write initial positions as coordinate block
     vtf.writevcf(system, fp)
 
@@ -359,7 +359,7 @@ can easily add further structure lines to the VTF/VSF file after a
 structure block has been written to specify further particle properties
 for visualization.
 
-Note that the ``ids`` of the particles in and VMD may differ. VMD requires
+Note that the ``ids`` of the particles in |es| and VMD may differ. VMD requires
 the particle ids to be enumerated continuously without any holes, while
 this is not required in |es|. When using ``writevsf``
 and ``writevcf``, the particle ids are
@@ -380,8 +380,7 @@ timesteps. This is a restriction of VMD itself, not of the format.
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 :meth:`espressomd.io.writer.vtf.writevsf`
 
-Writes a structure block describing the system's structure to the given channel.
-for example
+Writes a structure block describing the system's structure to the given channel, for example:
 
 .. code:: python