Small Typo fixes.

Documentation update, thank's to Fellix.

base/src/org/compiere/model/MInventory.java

@@ -256,7 +256,7 @@ public class MInventory extends X_M_Inventory implements DocAction
 	
 	/**
 	 * 	Set Processed.
-	 * 	Propergate to Lines/Taxes
+	 * 	Propagate to Lines/Taxes
 	 *	@param processed processed
 	 */
 	public void setProcessed (boolean processed)
@@ -933,7 +933,7 @@ public class MInventory extends X_M_Inventory implements DocAction
 	 * Create Cost Detail
 	 * @param line
 	 * @param Qty
-	 * @return
+	 * @return an EMPTY String on success otherwise an ERROR message
 	 */
 	private String createCostDetail(MInventoryLine line, int M_AttributeSetInstance_ID, BigDecimal qty)
 	{

base/src/org/compiere/plaf/CompiereLookAndFeel.java

@@ -189,7 +189,7 @@ public class CompiereLookAndFeel extends MetalLookAndFeel
 
 	
 	/**************************************************************************
-	 *  Create Default Thems
+	 *  Create Default Themes
 	 */
 	protected void createDefaultTheme()
 	{

base/src/org/compiere/plaf/CompierePanelUI.java

@@ -43,7 +43,7 @@ public class CompierePanelUI extends BasicPanelUI
 {
 	/**
 	 *  Static Create UI
-	 *  @param c Vomponent
+	 *  @param c JComponent
 	 *  @return Adempiere Panel UI
 	 */
 	public static ComponentUI createUI (JComponent c)