Fix a few more typos

closes: #20135

Signed-off-by: Felipe Matarazzo <felipemps@protonmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/normal.c

@@ -6513,7 +6513,7 @@ set_op_var(int optype)
 /*
  * Handle linewise operator "dd", "yy", etc.
  *
- * "_" is is a strange motion command that helps make operators more logical.
+ * "_" is a strange motion command that helps make operators more logical.
  * It is actually implemented, but not documented in the real Vi.  This motion
  * command actually refers to "the current line".  Commands like "dd" and "yy"
  * are really an alternate form of "d_" and "y_".  It does accept a count, so

src/vim9cmds.c

@@ -215,7 +215,7 @@ compile_lock_unlock(
 	// These checks are reminiscent of the variable_exists function.
 	// But most of the matches require special handling.
 
-	// If bare name is is locally accessible, except for local var,
+	// If bare name is locally accessible, except for local var,
 	// then put it on the stack to use with ISN_LOCKUNLOCK.
 	// This could be v.memb, v[idx_key]; bare class variable,
 	// function arg. The item on the stack, will be passed