patch 8.2.0156: various typos in source files and tests

Problem:    Various typos in source files and tests.
Solution:   Fix the typos. (Emir Sari, closes #5532)
diff --git a/src/quickfix.c b/src/quickfix.c
index 2e07403..868b5d9 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2771,7 +2771,7 @@
 }
 
 /*
- * Get a entry specied by 'errornr' and 'dir' from the current
+ * Get a entry specified by 'errornr' and 'dir' from the current
  * quickfix/location list. 'errornr' specifies the index of the entry and 'dir'
  * specifies the direction (FORWARD/BACKWARD/FORWARD_FILE/BACKWARD_FILE).
  * Returns a pointer to the entry and the index of the new entry is stored in
@@ -6320,7 +6320,7 @@
 
 #if defined(FEAT_EVAL) || defined(PROTO)
 /*
- * Copy the specified quickfix entry items into a new dict and appened the dict
+ * Copy the specified quickfix entry items into a new dict and append the dict
  * to 'list'.  Returns OK on success.
  */
     static int