Correct two links to common core metadata schema

Author: James McKinney

policy-memo.md

@@ -28,7 +28,7 @@ Making information resources accessible, discoverable, and usable by the public
 
 Pursuant to the Executive Order of May 9, 2013, *Making Open and Machine Readable the New Default for Government Information*, this Memorandum establishes a framework to help institutionalize the principles of effective information management at each stage of the information's life cycle to promote interoperability and openness. Whether or not particular information can be made public, agencies can apply this framework to all information resources to promote efficiency and produce value. 
 
-Specifically, this Memorandum requires agencies to collect or create information in a way that supports downstream information processing and dissemination activities. This includes using machine-readable and open formats, data standards, and [common core and extensible metadata](schema.md) for all new information creation and collection efforts. It also includes agencies ensuring information stewardship through the use of open licenses and review of information for privacy, confidentiality, security, or other restrictions to release. Additionally, it involves agencies building or modernizing information systems in a way that maximizes interoperability and information accessibility, maintains internal and external data asset inventories, enhances information safeguards, and clarifies information management responsibilities. 
+Specifically, this Memorandum requires agencies to collect or create information in a way that supports downstream information processing and dissemination activities. This includes using machine-readable and open formats, data standards, and [common core and extensible metadata](/schema/) for all new information creation and collection efforts. It also includes agencies ensuring information stewardship through the use of open licenses and review of information for privacy, confidentiality, security, or other restrictions to release. Additionally, it involves agencies building or modernizing information systems in a way that maximizes interoperability and information accessibility, maintains internal and external data asset inventories, enhances information safeguards, and clarifies information management responsibilities. 
 
 The Federal Government has already made significant progress in improving its management of information resources to increase interoperability and openness. The President's Memorandum on *Transparency and Open Government*[^1] instructed agencies to take specific actions to implement the principles of transparency, participation, and collaboration, and the Office of Management and Budget's (OMB) *Open Government Directive*[^2] required agencies to expand access to information by making it available online in open formats. OMB has also developed policies to help agencies incorporate sound information practices, including OMB Circular A-130[^3] and OMB Memorandum M-06-02.[^4] In addition, the Federal Government launched [Data.gov](http://www.data.gov), an online platform designed to increase access to Federal datasets. The publication of thousands of data assets through [Data.gov](http://www.data.gov) has enabled the development of numerous products and services that benefit the public. 
 
@@ -106,7 +106,7 @@ Agencies must apply open licenses, in consultation with the best practices found
 
 ##### d. Use common core and extensible metadata
 
-Agencies must describe information using [common core metadata](schema.md), in consultation with the best practices found in Project Open Data, as it is collected and created. Metadata should also include information about origin, linked data, geographic location, time series continuations, data quality, and other relevant indices that reveal relationships between datasets and allow the public to determine the fitness of the data source. Agencies may expand upon the basic common metadata based on standards, specifications, or formats developed within different communities (e.g., financial, health, geospatial, law enforcement). Groups that develop and promulgate these metadata specifications must review them for compliance with the common core metadata standard, specifications, and formats.
+Agencies must describe information using [common core metadata](/schema/), in consultation with the best practices found in Project Open Data, as it is collected and created. Metadata should also include information about origin, linked data, geographic location, time series continuations, data quality, and other relevant indices that reveal relationships between datasets and allow the public to determine the fitness of the data source. Agencies may expand upon the basic common metadata based on standards, specifications, or formats developed within different communities (e.g., financial, health, geospatial, law enforcement). Groups that develop and promulgate these metadata specifications must review them for compliance with the common core metadata standard, specifications, and formats.
 
 #### 2. Build information systems to support interoperability and information accessibility