Fix typos and grammar in comments and documentation

doc/starterkit/k4MarlinWrapperCLIC/CEDViaWrapper.md

@@ -118,4 +118,4 @@ The `event_display.py` options file that is used above and that is present in th
 - Exchange the LCIO input reading by the podio input reading (see above)
 - Attach the `EDM4hep2LcioTool` to the wrapped `CEDViewer` processor
 
-This should allow to arrive at a similar steering file even for slightly different configurations. One potential pitfal is the slightly different naming of the `ddsim` outputs between LCIO and EDM4hep (see [this issue](https://github.com/AIDASoft/DD4hep/issues/921)). This can be addressed by configuring the EDM4hep to LCIO converter (`edmConvTool` in the code above) to map the names accordingly.
+This should allow one to arrive at a similar steering file even for slightly different configurations. One potential pitfall is the slightly different naming of the `ddsim` outputs between LCIO and EDM4hep (see [this issue](https://github.com/AIDASoft/DD4hep/issues/921)). This can be addressed by configuring the EDM4hep to LCIO converter (`edmConvTool` in the code above) to map the names accordingly.

doc/starterkit/k4MarlinWrapperCLIC/edmConverters.md

@@ -126,7 +126,7 @@ Collections from events that are already read, or are produced by a Gaudi Algori
 
 1. Instantiate the `EDM4hep2LcioTool` Gaudi Tool, e.g. as `edmConvTool = EDM4hep2LcioTool("EDM4hep2lcio")`
 2. Indicate the collections to convert using the options of the tool.
-  + To sipmly convert all available collections use `edmConvTool.convertAll = True` (this is also the default!)
+  + To simply convert all available collections use `edmConvTool.convertAll = True` (this is also the default!)
   + If you want to convert all available collections but want to rename some of them, e.g. because an algorithm expects a different name, use the `collNameMapping` option. This maps the input name to the output name; `edmConvTool.collNameMapping = {'MCParticles': 'MCParticle'}` will convert the input `'MCParticles'` into the `'MCParticle'` collection.
   + To convert only a subset of all available collections, set the `convertAll` option to `False` and indicate the collections to convert via the `collNameMapping` option.
 3. Select the Gaudi Algorithm that will convert the indicated collections.
@@ -158,7 +158,7 @@ Collections from events that are already read, or are produced by a gaudi Algori
 
 1. Instantiate the `Lcio2EDM4hepTool` Gaudi Tool, e.g. as `lcioConvTool = Lcio2EDM4hepTool("LCIO2EDM4hep")`.
 2. Indicate the collections to convert in the options of the tool.
-  + To sipmly convert all available collections use `lcioConvTool.convertAll = True` (this is also the default!)
+  + To simply convert all available collections use `lcioConvTool.convertAll = True` (this is also the default!)
   + If you want to convert all available collections but want to rename some of them, e.g. because an algorithm expects a different name, use the `collNameMapping` option. This maps the input name to the output name; `lcioConvTool.collNameMapping = {'MCParticles': 'MCParticle'}` will convert the input `'MCParticles'` into the `'MCParticle'` collection.
   + To convert only a subset of all available collections, set the `convertAll` option to `False` and indicate the collections to convert via the `collNameMapping` option.
 3. Select the Gaudi Algorithm that will convert the indicated collections.

k4MarlinWrapper/src/components/EDM4hep2Lcio.cpp

@@ -273,11 +273,11 @@ void EDM4hep2LcioTool::convertAdd(const std::string& e4h_coll_name, const std::s
 StatusCode EDM4hep2LcioTool::convertCollections(lcio::LCEventImpl* lcio_event) {
   const auto collections = m_podioDataSvc->getCollections();
 
-  // Start of with the pre-defined collection name mappings
+  // Start off with the pre-defined collection name mappings
   auto collsToConvert{m_collNames.value()};
   if (m_convertAll) {
     info() << "Converting all collections from EDM4hep to LCIO" << endmsg;
-    // And simply add the rest, taking exploiting the fact that emplace will not
+    // And simply add the rest, exploiting the fact that emplace will not
     // replace existing entries with the same key
     for (const auto& [name, _] : collections) {
       collsToConvert.emplace(name, name);

k4MarlinWrapper/src/components/Lcio2EDM4hep.cpp

@@ -129,7 +129,7 @@ StatusCode Lcio2EDM4hepTool::convertCollections(lcio::LCEventImpl* the_event) {
   std::unique_ptr<k4LCIOConverter> lcio_converter = std::make_unique<k4LCIOConverter>(id_table);
   lcio_converter->set(the_event);
 
-  // Start of with the pre-defined collection name mappings
+  // Start off with the pre-defined collection name mappings
   auto collsToConvert{m_collNames.value()};
   if (m_convertAll) {
     const auto* collections = the_event->getCollectionNames();