badwords: detect use of "dir", use "directory"

badwords.txt

@@ -26,3 +26,4 @@ there's:there is
 \. And: Rewrite it somehow?
 file name :filename
 \. So : Rewrite without "so" ?
+ dir :directory

build/boringssl.md

@@ -16,10 +16,10 @@ like.
 ## set up the build tree to get detected by curl's configure
 
 In the boringssl source tree root, make sure there is a `lib` and an `include`
-dir. The `lib` dir should contain the two libs (I made them symlinks into the
-build dir). The `include` dir is already present by default. Make and populate
-`lib` like this (commands issued in the source tree root, not in the `build/`
-subdirectory).
+dir. The `lib` directory should contain the two libs (I made them symlinks
+into the build dir). The `include` directory is already present by
+default. Make and populate `lib` like this (commands issued in the source tree
+root, not in the `build/` subdirectory).
 
 
  $ mkdir lib

cmdline/configfile.md

@@ -126,7 +126,7 @@ Curl looks for the default config file in the following locations, in this order
 7) Non-Windows: use getpwuid to find the home directory
 
 8) On Windows, if it finds no `.curlrc` file in the sequence described above,
-it checks for one in the same dir the curl executable is placed.
+it checks for one in the same directory the curl executable is placed.
 
 On Windows two filenames are checked per location: `.curlrc` and `_curlrc`,
 preferring the former. Ancient curl versions on Windows checked for `_curlrc`