Spelling fixes in comments, documentation, tests and examples

By klemens <ka7@github.com>

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/findutils/grep.c b/findutils/grep.c
index 261e563..d66d85a 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -515,7 +515,7 @@
 				if (option_mask32 & OPT_o) {
 					if (FGREP_FLAG) {
 						/* -Fo just prints the pattern
-						 * (unless -v: -Fov doesnt print anything at all) */
+						 * (unless -v: -Fov doesn't print anything at all) */
 						if (found)
 							print_line(gl->pattern, strlen(gl->pattern), linenum, ':');
 					} else while (1) {
@@ -823,7 +823,7 @@
  grep_done: ;
 	} while (*argv && *++argv);
 
-	/* destroy all the elments in the pattern list */
+	/* destroy all the elements in the pattern list */
 	if (ENABLE_FEATURE_CLEAN_UP) {
 		while (pattern_head) {
 			llist_t *pattern_head_ptr = pattern_head;