Fix typo

Change-Id: I0f2f69bc1c5ed15ff4c2580ad7d81259add27007
Reviewed-on: https://gerrit.libreoffice.org/65948Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Jenkins

sw/source/uibase/inc/UnfloatTableButton.hxx

@@ -16,7 +16,7 @@
 /** Class for unfloat table button
  *
  * This unfloat button is used to convert a floating table into a simple writer table embedded to the text body.
- * This unfloat oparation is useful typically for documents imported from MSO file formats containing
+ * This unfloat operation is useful typically for documents imported from MSO file formats containing
  * multi-page floating tables. In case of a multi-page table the text frame cuts off the table because
  * the frame can't span across multiple pages. With unfloating we can get a multi-page table without
  * floating properties.