docs: Fix some typos in comments and log messge (#7975)

src/childinfo.c

@@ -36,7 +36,7 @@
 void openChildInfoPipe(void) {
     if (pipe(server.child_info_pipe) == -1) {
         /* On error our two file descriptors should be still set to -1,
-         * but we call anyway cloesChildInfoPipe() since can't hurt. */
+         * but we call anyway closeChildInfoPipe() since can't hurt. */
         closeChildInfoPipe();
     } else if (anetNonBlock(NULL,server.child_info_pipe[0]) != ANET_OK) {
         closeChildInfoPipe();

src/db.c

@@ -1691,7 +1691,7 @@ void slotToKeyFlush(void) {
            sizeof(server.cluster->slots_keys_count));
 }
 
-/* Pupulate the specified array of objects with keys in the specified slot.
+/* Populate the specified array of objects with keys in the specified slot.
  * New objects are returned to represent keys, it's up to the caller to
  * decrement the reference count to release the keys names. */
 unsigned int getKeysInSlot(unsigned int hashslot, robj **keys, unsigned int count) {

src/dict.c

@@ -759,7 +759,7 @@ dictEntry *dictGetFairRandomKey(dict *d) {
     /* Note that dictGetSomeKeys() may return zero elements in an unlucky
      * run() even if there are actually elements inside the hash table. So
      * when we get zero, we call the true dictGetRandomKey() that will always
-     * yeld the element if the hash table has at least one. */
+     * yield the element if the hash table has at least one. */
     if (count == 0) return dictGetRandomKey(d);
     unsigned int idx = rand() % count;
     return entries[idx];

src/rdb.c

@@ -1419,7 +1419,7 @@ int rdbSaveBackground(char *filename, rdbSaveInfo *rsi) {
 
 /* Note that we may call this function in signal handle 'sigShutdownHandler',
  * so we need guarantee all functions we call are async-signal-safe.
- * If  we call this function from signal handle, we won't call bg_unlik that
+ * If  we call this function from signal handle, we won't call bg_unlink that
  * is not async-signal-safe. */
 void rdbRemoveTempFile(pid_t childpid, int from_signal) {
     char tmpfile[256];
@@ -1892,7 +1892,7 @@ robj *rdbLoadObject(int rdbtype, rio *rdb, sds key) {
                     return NULL;
                 }
                 if (!raxInsert(cgroup->pel,rawid,sizeof(rawid),nack,NULL))
-                    rdbExitReportCorruptRDB("Duplicated gobal PEL entry "
+                    rdbExitReportCorruptRDB("Duplicated global PEL entry "
                                             "loading stream consumer group");
             }