release notes: add a bunch of them

Also fix typos introduced by the commits I read.

I have run the addDrvOutputDependencies release note past Ericson since
I was confused by what the heck it was doing, and he was saying it was
reasonable.

Change-Id: Id015353b00938682f7faae7de43df7f991a5237e

src/libexpr/primops/context.cc

@@ -36,7 +36,7 @@ static RegisterPrimOp primop_hasContext({
 
       > **Example**
       >
-      > Many operations require a string context to be empty because they are intended only to work with "regular" strings, and also to help users avoid unintentionally loosing track of string context elements.
+      > Many operations require a string context to be empty because they are intended only to work with "regular" strings, and also to help users avoid unintentionally losing track of string context elements.
       > `builtins.hasContext` can help create better domain-specific errors in those case.
       >
       > ```nix
@@ -137,14 +137,14 @@ static RegisterPrimOp primop_addDrvOutputDependencies({
     .name = "__addDrvOutputDependencies",
     .args = {"s"},
     .doc = R"(
-      Create a copy of the given string where a single consant string context element is turned into a "derivation deep" string context element.
+      Create a copy of the given string where a single constant string context element is turned into a "derivation deep" string context element.
 
       The store path that is the constant string context element should point to a valid derivation, and end in `.drv`.
 
       The original string context element must not be empty or have multiple elements, and it must not have any other type of element other than a constant or derivation deep element.
       The latter is supported so this function is idempotent.
 
-      This is the opposite of [`builtins.unsafeDiscardOutputDependency`](#builtins-addDrvOutputDependencies).
+      This is the opposite of [`builtins.unsafeDiscardOutputDependency`](#builtins-unsafeDiscardOutputDependency).
     )",
     .fun = prim_addDrvOutputDependencies
 });