Rename '<sh-pipe>' to '<sh-pipeline>'

* doc/syntax.txt: Rename '<sh-pipe>' to '<sh-pipeline>'.
* geesh/parser.scm (make-parser): Ditto.
* tests/parser.scm: Fix test accordingly.

doc/syntax.txt

@@ -10,7 +10,7 @@ exp   ::= pipe
         | ('<sh-not> pipe)
 
 pipe  ::= cmd*
-        | ('<sh-pipe> cmd* ...)
+        | ('<sh-pipeline> cmd* ...)
 
 cmd*  ::= cmd
         | ('<sh-defun> name sync ...)

geesh/parser.scm

@@ -289,7 +289,7 @@ the same number of times.)"
     (command)
     : `(,$1)
     (pipe-sequence PIPE linebreak command)
-    : `(<sh-pipe> ,(append $1 (list $4))))
+    : `(<sh-pipeline> ,(append $1 (list $4))))
 
    (command
     (simple-command)

tests/parser.scm

@@ -126,8 +126,8 @@
 ;; Pipelines
 
 (test-equal "Parses pipelines"
-  '(<sh-pipe> ((<sh-exec> "cat" "foo.txt")
-               (<sh-exec> "grep" "bar")))
+  '(<sh-pipeline> ((<sh-exec> "cat" "foo.txt")
+                   (<sh-exec> "grep" "bar")))
   (parse "cat foo.txt | grep bar"))
 
 ;; Brace groups and subshells