Corrected spellings of argument

src/SeleniumLibrary/__init__.py

@@ -578,8 +578,8 @@ class SeleniumLibrary(DynamicCore):
     Template translation file, with English language can be created by running:
     `rfselib translation /path/to/translation.json` command. Command does not provide translations to other
     languages, it only provides easy way to create full list keywords and their documentation in correct
-    format. It is also possible to add keywords from library plugins by providing `--plugings` arguments
-    to command. Example: `rfselib translation --plugings myplugin.SomePlugin /path/to/translation.json` The
+    format. It is also possible to add keywords from library plugins by providing `--plugins` arguments
+    to command. Example: `rfselib translation --plugins myplugin.SomePlugin /path/to/translation.json` The
     generated json file contains `sha256` key, which contains the sha256 sum of the library documentation.
     The sha256 sum is used by `rfselib translation --compare /path/to/translation.json` command, which compares
     the translation to the library and prints outs a table which tells if there are changes needed for

src/SeleniumLibrary/entry/__main__.py

@@ -75,7 +75,7 @@ def translation(
 
     The filename argument will tell where the default json file is saved.
 
-    The --plugin argument will add plugin keywords in addition to the library keywords
+    The --plugins argument will add plugin keywords in addition to the library keywords
     into the default translation json file. It is used the same as plugins argument in
     the library import.
 

utest/test/api/approved_files/PluginDocumentation.test_many_plugins.approved.txt

@@ -517,8 +517,8 @@ translated, instead ``name`` should be kept the same.
 Template translation file, with English language can be created by running:
 `rfselib translation /path/to/translation.json` command. Command does not provide translations to other
 languages, it only provides easy way to create full list keywords and their documentation in correct
-format. It is also possible to add keywords from library plugins by providing `--plugings` arguments
-to command. Example: `rfselib translation --plugings myplugin.SomePlugin /path/to/translation.json` The
+format. It is also possible to add keywords from library plugins by providing `--plugins` arguments
+to command. Example: `rfselib translation --plugins myplugin.SomePlugin /path/to/translation.json` The
 generated json file contains `sha256` key, which contains the sha256 sum of the library documentation.
 The sha256 sum is used by `rfselib translation --compare /path/to/translation.json` command, which compares
 the translation to the library and prints outs a table which tells if there are changes needed for