[gdb/testsuite] Make gdb.debuginfod codespell-clean

Make gdb.debuginfod codespell-clean and add the dir to the pre-commit
configuration.

Approved-By: Tom Tromey <tom@tromey.com>
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 88f67ff..16c7505 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -70,7 +70,7 @@
     rev: v2.4.1
     hooks:
     - id: codespell
-      files: '^(gdbsupport|gdbserver|gdb/(tui|target|data-directory|po|system-gdbinit|mi|syscalls|arch|regformats|compile|python|guile|config|unittests|cli|testsuite/gdb.(ctf|dap|gdb|go|guile|mi|modula2|objc|opencl|opt|pascal|perf|replay|reverse|rocm|server|stabs|testsuite|tui|xml)))/'
+      files: '^(gdbsupport|gdbserver|gdb/(tui|target|data-directory|po|system-gdbinit|mi|syscalls|arch|regformats|compile|python|guile|config|unittests|cli|testsuite/gdb.(ctf|dap|debuginfod|gdb|go|guile|mi|modula2|objc|opencl|opt|pascal|perf|replay|reverse|rocm|server|stabs|testsuite|tui|xml)))/'
       args: [--config, gdb/contrib/setup.cfg]
   - repo: local
     hooks:
diff --git a/gdb/testsuite/gdb.debuginfod/build-id-no-debug-warning.exp b/gdb/testsuite/gdb.debuginfod/build-id-no-debug-warning.exp
index 93f8f92..35bb401 100644
--- a/gdb/testsuite/gdb.debuginfod/build-id-no-debug-warning.exp
+++ b/gdb/testsuite/gdb.debuginfod/build-id-no-debug-warning.exp
@@ -46,7 +46,7 @@
     [standard_output_file [build_id_debug_filename_get $binfile]]
 
 # Get the BINFILE.debug filename.  This is the file we should be
-# moving to the BUILD_ID_DEBUG_FILE location, but we wont, we're going
+# moving to the BUILD_ID_DEBUG_FILE location, but we won't, we're going
 # to move something else there instead.
 set debugfile [standard_output_file "${binfile}.debug"]
 
diff --git a/gdb/testsuite/gdb.debuginfod/corefile-mapped-file.exp b/gdb/testsuite/gdb.debuginfod/corefile-mapped-file.exp
index 78fa252..dac4e6c 100644
--- a/gdb/testsuite/gdb.debuginfod/corefile-mapped-file.exp
+++ b/gdb/testsuite/gdb.debuginfod/corefile-mapped-file.exp
@@ -49,7 +49,7 @@
 #
 # This obviously needs fixing, but is a separate problem from the one being
 # tested here, so this test deliberately checks the mapping using a file that
-# is mmaped rather than loaded as a shared library, as such the file is in the
+# is mmapped rather than loaded as a shared library, as such the file is in the
 # core-files list of mapped files, but is not in the shared library list.
 #
 # Despite this test living in the gdb.debuginfod/ directory, only the last
@@ -260,7 +260,7 @@
 	# We expect RES to be 2 (TCL_RETURN) or 1 (TCL_ERROR).  If we get
 	# here then somehow the 'catch' above finished without hitting
 	# either of those cases, which is .... weird.
-	perror "unexepcted return value, code = $res, value = $string"
+	perror "unexpected return value, code = $res, value = $string"
 	return -1
     }
 }
diff --git a/gdb/testsuite/gdb.debuginfod/solib-with-soname.exp b/gdb/testsuite/gdb.debuginfod/solib-with-soname.exp
index 9f1842c..1008e46 100644
--- a/gdb/testsuite/gdb.debuginfod/solib-with-soname.exp
+++ b/gdb/testsuite/gdb.debuginfod/solib-with-soname.exp
@@ -89,7 +89,7 @@
 }
 
 # Build the executable.  This links against libfoo.so, which is
-# poining at libfoo_1.so.  Just to confuse things even more, this
+# pointing at libfoo_1.so.  Just to confuse things even more, this
 # executable uses dlopen to load libfoo_2.so.  Weird!
 if { [build_executable "build executable" ${binfile} ${srcfile2} \
 	  [list debug shlib=${library_filename} shlib_load]] == -1 } {