doc: fix typos

close #11459

test/functional/api/mark_extended_spec.lua

@@ -507,7 +507,7 @@ describe('API/extmarks', function()
     feed('0l3dl<esc>')
     check_undo_redo(ns, marks[1], 0, 2, 0, 1)
     check_undo_redo(ns, marks[2], 0, 3, 0, 1)
-    -- delete 1, nothing should happend to our marks
+    -- delete 1, nothing should happen to our marks
     feed('u')
     feed('$x')
     check_undo_redo(ns, marks[2], 0, 3, 0, 3)
@@ -543,7 +543,7 @@ describe('API/extmarks', function()
     check_undo_redo(ns, marks[1], 0, 1, 0, 0)
     check_undo_redo(ns, marks[2], 0, 3, 0, 0)
     check_undo_redo(ns, marks[3], 1, 2, 1, 0)
-    -- delete 1, nothing should happend to our marks
+    -- delete 1, nothing should happen to our marks
     feed('u')
     feed('$<c-v>jx')
     check_undo_redo(ns, marks[2], 0, 3, 0, 3)

test/functional/autocmd/cmdline_spec.lua

@@ -33,7 +33,7 @@ describe('cmdline autocommands', function()
     eq({'notification', 'CmdlineEnter', {{cmdtype=':', cmdlevel=1}}}, next_msg())
 
     -- note: feed('bork<c-c>') might not consume 'bork'
-    -- due to out-of-band interupt handling
+    -- due to out-of-band interrupt handling
     feed('bork<esc>')
     eq({'notification', 'CmdlineLeave',
         {{cmdtype=':', cmdlevel=1, abort=true}}}, next_msg())

test/functional/cmdline/history_spec.lua

@@ -6,7 +6,7 @@ describe('history support code', function()
   before_each(clear)
 
   it('correctly clears start of the history', function()
-    -- Regression test: check absense of the memory leak when clearing start of
+    -- Regression test: check absence of the memory leak when clearing start of
     -- the history using ex_getln.c/clr_history().
     eq(1, funcs.histadd(':', 'foo'))
     eq(1, funcs.histdel(':'))
@@ -14,7 +14,7 @@ describe('history support code', function()
   end)
 
   it('correctly clears end of the history', function()
-    -- Regression test: check absense of the memory leak when clearing end of
+    -- Regression test: check absence of the memory leak when clearing end of
     -- the history using ex_getln.c/clr_history().
     meths.set_option('history', 1)
     eq(1, funcs.histadd(':', 'foo'))

test/functional/ui/cmdline_spec.lua

@@ -775,7 +775,7 @@ local function test_cmdline(linegrid)
     }}}
 
     -- This used to send an invalid event where pos where larger than the total
-    -- lenght of content. Checked in _handle_cmdline_show.
+    -- length of content. Checked in _handle_cmdline_show.
     feed('<esc>')
     screen:expect([[
       ^                         |

test/functional/ui/searchhl_spec.lua

@@ -442,7 +442,7 @@ describe('search highlighting', function()
     feed_command("call matchadd('MyGroup', 'special')")
     feed_command("call matchadd('MyGroup2', 'text', 0)")
 
-    -- searchhl and matchadd matches are exclusive, only the higest priority
+    -- searchhl and matchadd matches are exclusive, only the highest priority
     -- is used (and matches with lower priorities are not combined)
     feed_command("/ial te")
     screen:expect([[