Fix typos

Change-Id: Idd2b49ade1836ef974ed2786cf233a59571b49fc
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/209927
Tested-by: Julien Nabet <serval2412@yahoo.fr>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

xmloff/source/forms/eventimport.hxx

@@ -52,7 +52,7 @@ namespace xmloff
             css::uno::Sequence< css::script::ScriptEventDescriptor >>
             MapPropertySet2ScriptSequence;
         // usually an event attacher manager will need to collect all script events registered, 'cause
-        // the _real_ XEventAttacherManager handles it's events by index, but out indices are not fixed
+        // the _real_ XEventAttacherManager handles its events by index, but our indices are not fixed
         // until _all_ controls have been inserted.
 
         MapPropertySet2ScriptSequence   m_aEvents;

xmloff/source/forms/formattributes.hxx

@@ -283,7 +283,7 @@ namespace xmloff
         static OUString getOfficeFormsAttributeName(OfficeFormsAttributes _eAttrib);
         static xmloff::token::XMLTokenEnum getOfficeFormsAttributeToken(OfficeFormsAttributes _eAttrib);
 
-        /** calculates the xml namedspace key of an attribute of the office:forms element
+        /** calculates the xml namespace key of an attribute of the office:forms element
             @param _nId
                 the id of the attribute
         */
@@ -297,14 +297,14 @@ namespace xmloff
     /** some kind of opposite to the OAttributeMetaData class. Able to translate
         attributes into property names/types
 
-        <p>The construction of this class is rather expensive (or at least it's initialization from outside),
+        <p>The construction of this class is rather expensive (or at least its initialization from outside),
         so it should be shared</p>
     */
     class OAttribute2Property final
     {
     public:
         // TODO: maybe the following struct should be used for exports, too. In this case we would not need to
-        // store it's instances in a map, but in a vector for faster access.
+        // store its instances in a map, but in a vector for faster access.
         struct AttributeAssignment
         {
             OUString                 sPropertyName;          // the property name

xmloff/source/forms/formcellbinding.hxx

@@ -209,7 +209,7 @@ namespace xmloff
                             const OUString& _rService
                         );
 
-        /** uses the document (it's factory interface, respectively) to create a component instance
+        /** uses the document (its factory interface, respectively) to create a component instance
             @param _rService
                 the service name
             @param _rArgumentName

xmloff/source/forms/layerexport.hxx

@@ -188,7 +188,7 @@ namespace xmloff
             you collected previously will be lost</p>
 
             @param _rxDrawPage
-                the draw page which's forms collection should be examined
+                the draw page whose forms collection should be examined
 
             @see getControlId
             @see exportControl
@@ -260,7 +260,7 @@ namespace xmloff
 
         /** ensures that the number format of the given control exist in our own formats supplier.
 
-            <p>The given control is examined for its format (i.e. it's FormatKey/FormatsSupplier properties),
+            <p>The given control is examined for its format (i.e. its FormatKey/FormatsSupplier properties),
             and the format is added (if necessary) to m_xControlNumberFormats</p>.
 
             @return