docs: Fix obvious typos

Correct duplicated and misspelled words in user and developer
documentation. No code or output strings are changed.

scst/README

@@ -982,7 +982,7 @@ and luns as well as the following attributes: addr_method, cpu_mask and
 io_grouping_type, black_hole. See above description of them.
 
 Each "initiators" subdirectory contains list of added to this groups
-initiator as well as as well as file "mgmt". This file has the following
+initiator as well as file "mgmt". This file has the following
 commands, which you can send to it, for instance, using "echo" shell
 command. You can always get a small help about supported commands by
 looking inside this file.

scst/src/dev_handlers/scst_disk.c

@@ -494,7 +494,7 @@ static enum scst_exec_res disk_exec(struct scst_cmd *cmd)
 	 * If we are passing thru a INQUIRY VPD=0x83 (device identification) then
 	 * we will call scst_replace_port_info on success in scst_pass_through_cmd_done.
 	 * This will run in interrupt context, so we should not perform operations that
-	 * involve mutexes.  Call scst_lookup_tg_id here intead and save the output.
+	 * involve mutexes.  Call scst_lookup_tg_id here instead and save the output.
 	 */
 	if (unlikely(scst_cmd_inquired_dev_ident(cmd)))
 		cmd->tg_id = scst_lookup_tg_id(dev, tgt);

srpt/Measurement-Results.txt

@@ -54,7 +54,7 @@ Target system software configuration:
 Measurement results
 ===================
 
-Numer of read IOPS reported by fio with block size 4 KB and I/O depth 32:
+Number of read IOPS reported by fio with block size 4 KB and I/O depth 32:
 197000
 
 + blockdev-perftest -f -j -d -s 30 -m 12 /dev/sdb