Fix typos

Change-Id: I9ed001f746fb7717e3e48c34f41b42cb0539bd3e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/209897
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>
Tested-by: Julien Nabet <serval2412@yahoo.fr>

hwpfilter/source/hbox.h

@@ -574,7 +574,7 @@ struct Picture: public FBox
     hchar     dummy;
 /**
  * follow_block_size is the size information of the Drawing object of hwp.
- * It's value is greater than 0 if the pictype is PICTYPE_DRAW.
+ * Its value is greater than 0 if the pictype is PICTYPE_DRAW.
  */
     uint      follow_block_size;                  /* Additional information length. */
     short     dummy1;                             // to not change structure size */

hwpfilter/source/hinfo.cxx

@@ -71,7 +71,7 @@ HWPInfo::~HWPInfo()
  */
 void HWPInfo::Read(HWPFile & hwpf)
 {
-    hwpf.Read2b(&cur_col, 1);                     /* When a document is saving, the paragraph number where the coursor is */
+    hwpf.Read2b(&cur_col, 1);                     /* When a document is saving, the paragraph number where the cursor is */
     hwpf.Read2b(&cur_row, 1);                     /* Paragraphs rows */
 
     hwpf.Read1b(paper.paper_kind);                /* Paper Type */

hwpfilter/source/hpara.cxx

@@ -102,7 +102,7 @@ bool HWPPara::Read(HWPFile & hwpf, unsigned char flag)
     if (nch > 0)
         hwpf.AddCharShape(cshape);
 
-/* Paragraph paragraphs shape  */
+/* Paragraph shape  */
     if (nch && !reuse_shape)
     {
         pshape->Read(hwpf);