CLJ-2028 Fix docstrings in filter, filterv, remove and take-while

Signed-off-by: Stuart Halloway <stu@cognitect.com>

Author: wagjo

src/clj/clojure/core.clj

@@ -2772,7 +2772,7 @@
 
 (defn filter
   "Returns a lazy sequence of the items in coll for which
-  (pred item) returns true. pred must be free of side-effects.
+  (pred item) returns logical true. pred must be free of side-effects.
   Returns a transducer when no collection is provided."
   {:added "1.0"
    :static true}
@@ -2805,7 +2805,7 @@
 
 (defn remove
   "Returns a lazy sequence of the items in coll for which
-  (pred item) returns false. pred must be free of side-effects.
+  (pred item) returns logical false. pred must be free of side-effects.
   Returns a transducer when no collection is provided."
   {:added "1.0"
    :static true}
@@ -2867,7 +2867,7 @@
 
 (defn take-while
   "Returns a lazy sequence of successive items from coll while
-  (pred item) returns true. pred must be free of side-effects.
+  (pred item) returns logical true. pred must be free of side-effects.
   Returns a transducer when no collection is provided."
   {:added "1.0"
    :static true}
@@ -6814,7 +6814,7 @@
 
 (defn filterv
   "Returns a vector of the items in coll for which
-  (pred item) returns true. pred must be free of side-effects."
+  (pred item) returns logical true. pred must be free of side-effects."
   {:added "1.4"
    :static true}
   [pred coll]