Switch \fish sections to rst format

sphinx_doc_src/cmds/read.rst

@@ -82,18 +82,21 @@ Example
 
 The following code stores the value 'hello' in the shell variable `$foo`.
 
-\fish
-echo hello|read foo
 
-# This is a neat way to handle command output by-line:
-printf '%s\n' line1 line2 line3 line4 | while read -l foo
-                  echo "This is another line: $foo"
-              end
 
-# Delimiters given via "-d" are taken as one string
-echo a==b==c | read -d == -l a b c
-echo $a # a
-echo $b # b
-echo $c # c
+::
+
+    echo hello|read foo
+    
+    # This is a neat way to handle command output by-line:
+    printf '%s\n' line1 line2 line3 line4 | while read -l foo
+                      echo "This is another line: $foo"
+                  end
+    
+    # Delimiters given via "-d" are taken as one string
+    echo a==b==c | read -d == -l a b c
+    echo $a # a
+    echo $b # b
+    echo $c # c
+    
 
-\endfish