English fixes

cf. https://github.com/tats/w3m/pull/241

doc/MANUAL.html

@@ -1899,7 +1899,7 @@ mh 2016-06-12 Interrupt is an alias to SUSPEND, no need to mention it here
      Q
     </td>
     <td>
-     Quit at once
+     Quit without confirmation
     </td>
    </tr>
   </table>

doc/README.img

@@ -103,7 +103,7 @@ Required programs
       and 16/24/32 bpp truecolor/directcolor)
 
 
-w3mimgdisplay Settings
+w3mimgdisplay settings
 
   "w3mimgdisplay" has the following options. Set options to fit terminal.
 

libwc/wc_types.h

@@ -73,7 +73,7 @@ typedef struct {
 } wc_ces_list;
 
 typedef struct {
-    wc_uint8 auto_detect;	/* automatically charset detect */
+    wc_uint8 auto_detect;	/* automatically charset detection */
     wc_bool use_combining;	/* use combining characters */
     wc_bool use_language_tag;	/* use language_tags */
     wc_bool ucs_conv;		/* charset conversion using Unicode */

main.c

@@ -2589,7 +2589,7 @@ _quitfm(int confirm)
 }
 
 /* Quit */
-DEFUN(quitfm, ABORT EXIT, "Quit at once")
+DEFUN(quitfm, ABORT EXIT, "Quit without confirmation")
 {
     _quitfm(FALSE);
 }

rc.c

@@ -237,18 +237,18 @@ static int OptionEncode = FALSE;
 #ifdef USE_M17N
 #define CMT_DISPLAY_CHARSET  N_("Display charset")
 #define CMT_DOCUMENT_CHARSET N_("Default document charset")
-#define CMT_AUTO_DETECT      N_("Automatic charset detect when loading")
+#define CMT_AUTO_DETECT      N_("Automatic charset detection when loading")
 #define CMT_SYSTEM_CHARSET   N_("System charset")
 #define CMT_FOLLOW_LOCALE    N_("System charset follows locale(LC_CTYPE)")
 #define CMT_EXT_HALFDUMP     N_("Output halfdump with display charset")
-#define CMT_USE_WIDE         N_("Use multi column characters")
+#define CMT_USE_WIDE         N_("Use multi-column characters")
 #define CMT_USE_COMBINING    N_("Use combining characters")
 #define CMT_EAST_ASIAN_WIDTH N_("Use double width for some Unicode characters")
 #define CMT_USE_LANGUAGE_TAG N_("Use Unicode language tags")
 #define CMT_UCS_CONV         N_("Charset conversion using Unicode map")
 #define CMT_PRE_CONV         N_("Charset conversion when loading")
 #define CMT_SEARCH_CONV      N_("Adjust search string for document charset")
-#define CMT_FIX_WIDTH_CONV   N_("Fix character width when conversion")
+#define CMT_FIX_WIDTH_CONV   N_("Fix character width when converting")
 #define CMT_USE_GB12345_MAP  N_("Use GB 12345 Unicode map instead of GB 2312's")
 #define CMT_USE_JISX0201     N_("Use JIS X 0201 Roman for ISO-2022-JP")
 #define CMT_USE_JISC6226     N_("Use JIS C 6226:1978 for ISO-2022-JP")