docs: new keywords for PKG_NEEDS are available

docs/package-reference.txt

@@ -54,7 +54,7 @@ information is:
 
 * +PKG_NEEDS+ optional, lists the features that are required to build or
   run the software package on the target. It contains a list of keywords.
-  Supported are +threads+ +rt+ +c+++
+  Supported are +threads+ +mmu+ +intl+ and +c+++
 
 * +PKG_NOPARALLEL+ optional, may be set to 1, to disable parallel building of the
   package via make -jn, n=4 is default, but can be changed in +Global Settings+ in the

docs/patch-policy.txt

@@ -75,7 +75,7 @@ Backported from: <some commit id>
 or
 
 ---------------
-Fetch from: <some url>
+Fetched from: <some url>
 ---------------
 
 It is also sensible to add a few words about any changes to the patch