Fixes typo in rake task. Adds comment.

lib/tasks/spending_proposals.rake

@@ -1,20 +1,21 @@
 namespace :spending_proposals do
   desc "Sends an email to the authors of unfeasible spending proposals"
   task send_unfeasible_emails: :environment do
-    SpendingProposal.find_each do |spending_propsal|
-      if spending_propsal.unfeasible_email_pending?
-        spending_propsal.send_unfeasible_email
-        puts "email sent for proposal #{spending_propsal.title}"
+    SpendingProposal.find_each do |spending_proposal|
+      if spending_proposal.unfeasible_email_pending?
+        spending_proposal.send_unfeasible_email
+        puts "email sent for proposal #{spending_proposal.title}"
       else
-        puts "this proposal is feasible: #{spending_propsal.title}"
+        puts "this proposal is feasible: #{spending_proposal.title}"
       end
     end
   end
 
-  desc "Updates all spending proposals to recalculate their tsv column"
+  desc "Updates all spending proposals to recalculate their tsv and responsible_name columns"
   task touch: :environment do
-    SpendingProposal.find_in_batches do |spending_propsal|
-      spending_propsal.each(&:save)
+    SpendingProposal.find_in_batches do |spending_proposal|
+      spending_proposal.each(&:save)
     end
   end
-end
+
+end