Fix typo

Change-Id: I2111770ea4356c13e8703165774bb3c4cd06356c
Reviewed-on: https://gerrit.libreoffice.org/65577
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

editeng/source/editeng/impedit3.cxx

@@ -1543,7 +1543,7 @@ bool ImpEditEngine::CreateLines( sal_Int32 nPara, sal_uInt32 nStartPosY )
         if ( pParaPortion->IsSimpleInvalid() )
         {
             // Change through simple Text changes...
-            // Do mot cancel formatting since Portions possibly have to be split
+            // Do not cancel formatting since Portions possibly have to be split
             // again! If at some point cancelable, then validate the following
             // line! But if applicable, mark as valid, so there is less output...
             if ( pLine->GetEnd() < nInvalidStart )